Progress Toward Regional Measles Elimination - Worldwide, 2000-2018
Progress Toward Regional Measles Elimination - Worldwide, 2000-2018
  In 2010, the World Health Assembly (WHA) set the fol-                                are needed to strengthen routine immunization systems,
lowing three milestones for measles control to be achieved                             close historical immunity gaps, and improve surveillance. To
by 2015: 1) increase routine coverage with the first dose of                           achieve measles elimination, all communities and countries
measles-containing vaccine (MCV1) among children aged                                  need coordinated efforts aiming to reach ≥95% coverage with
1 year to ≥90% at the national level and to ≥80% in every                              2 doses of measles vaccine (3).
district, 2) reduce global annual measles incidence to less
than five cases per 1 million population, and 3) reduce global                         Immunization Activities
measles mortality by 95% from the 2000 estimate* (1). In                                 WHO and the United Nations Children’s Fund (UNICEF)
2012, WHA endorsed the Global Vaccine Action Plan,† with                               use data from administrative records and vaccination cover-
the objective of eliminating measles§ in five of the six World                         age surveys reported annually to estimate MCV1 and sec-
Health Organization (WHO) regions by 2020. This report                                 ond dose (MCV2) coverage through routine immunization
updates a previous report (2) and describes progress toward                            services.¶ During 2000–2018, estimated MCV1 coverage
WHA milestones and regional measles elimination during                                 increased globally from 72% to 86% (Table), although cover-
2000–2018. During 2000–2018, estimated MCV1 coverage                                   age has remained at 84%–86% since 2010, with considerable
increased globally from 72% to 86%; annual reported measles                            regional variation. Since 2016, MCV1 coverage has remained
incidence decreased 66%, from 145 to 49 cases per 1 million                            relatively constant in the African Region (AFR) (74%–75%),
population; and annual estimated measles deaths decreased                              the Eastern Mediterranean Region (EMR) (82%–83%), and
73%, from 535,600 to 142,300. During 2000–2018, measles                                the South-East Asia Region (SEAR) (88%–89%); and it
vaccination averted an estimated 23.2 million deaths. However,
                                                                                       ¶	For MCV1, among children aged 1 year or, if MCV1 is given at age ≥1 year,
the number of measles cases in 2018 increased 167% globally                             among children aged 24 months. For MCV2, among children at the recommended
compared with 2016, and estimated global measles mortality                              age for administration of MCV2, per the national immunization schedule. WHO/
has increased since 2017. To continue progress toward the                               UNICEF estimates of national immunization coverage are available at https://
                                                                                        www.who.int/immunization/monitoring_surveillance/data/en.
regional measles elimination targets, resource commitments
*	The coverage milestone is to be met by every country, whereas the incidence
  and mortality reduction milestones are to be met globally.                              INSIDE
†	The Global Vaccine Action Plan is the implementation plan of the Decade of
                                                                                          1112	 Progress Toward Measles Elimination — China,
  Vaccines, a collaboration between WHO; UNICEF; the Bill and Melinda Gates
  Foundation; the National Institute of Allergy and Infectious Diseases; the
                                                                                                January 2013–June 2019
  African Leaders Malaria Alliance; Gavi, the Vaccine Alliance; and others to             1117	 Vital Signs: Status of Human Immunodeficiency Virus
  extend the full benefit of immunization to all persons by 2020 and beyond. In                 Testing, Viral Suppression, and HIV Preexposure
  addition to 2015 targets, it also set a target for measles and rubella elimination
  in five of the six WHO regions by 2020. https://www.who.int/immunization/
                                                                                                Prophylaxis — United States, 2013–2018
  global_vaccine_action_plan/en; https://apps.who.int/gb/ebwha/pdf_files/                 1124	QuickStats
  wha65/a65_22-en.pdf.
§	Measles elimination is defined as the absence of endemic measles virus
  transmission in a region or other defined geographic area for ≥12 months, in                 Continuing Education examination available at
  the presence of a high-quality surveillance system that meets targets of key          https://www.cdc.gov/mmwr/cme/conted_info.html#weekly.
  performance indicators.
has remained constant since 2008 in the European Region                                      In 2018, approximately 346 million persons received measles
(EUR) (93%–95%) and in the Western Pacific Region (WPR)                                   vaccination during 45 supplementary immunization activities
(95%–97%). Estimated MCV1 coverage in the Region of the                                   (SIAs)†† in 37 countries; India’s 2018 SIA accounted for 47% of
Americas (AMR) decreased from 92% in 2016 to 88% in 2017                                  all persons vaccinated in SIAs worldwide. An additional 13 million
and increased to 90% in 2018.                                                             persons were vaccinated during measles outbreak response activities.
  Globally, 118 (61%) countries achieved ≥90% MCV1 cov-
erage in 2018, an increase from 86 (45%) countries in 2000,                               Reported Measles Incidence
but a decrease from 126 (65%) countries during 2012–2013.                                   In 2018, all 194 WHO member countries conducted
In 2018, MCV1 coverage was ≥95% nationally in 78 (40%)                                    measles surveillance, and 191 (98%) had access to standard-
countries and ≥80% in all districts in 57 (29%) countries.** In                           ized quality-controlled laboratory testing through the WHO
2018, 19.2 million infants worldwide did not receive MCV1                                 Global Measles and Rubella Laboratory Network. However,
through routine immunization services. The six countries with                             surveillance remains weak in many countries, and only 84
the most unvaccinated infants were Nigeria (2.4 million), India                           (55%) of 152 countries that reported surveillance indicators
(2.3 million), Pakistan (1.4 million), Ethiopia (1.3 million),                            achieved the sensitivity indicator target of ≥2 discarded measles
Indonesia (1.2 million), and the Philippines (0.7 million).                               and rubella§§ cases per 100,000 population.
  Estimated MCV2 coverage increased globally from 18% in
2000 to 69% in 2018, largely because of an increase in the                                	††	Supplementary    immunization activities (SIAs) generally are carried out using
number of countries providing MCV2 from 98 (51%) in 2000                                      two target age ranges. An initial, nationwide catch-up SIA focuses on all children
                                                                                              aged 9 months–14 years, with the goal of eliminating susceptibility to measles
to 171 (88%) in 2018 (Table). Four countries (Bolivia, the                                    in the general population. Periodic follow-up SIAs then focus on all children
Dominican Republic, Honduras, and the Solomon Islands)                                        born since the last SIA. Follow-up SIAs generally are conducted nationwide
introduced MCV2 in 2018.                                                                      every 2–4 years and focus on children aged 9–59 months; their goal is to
                                                                                              eliminate any measles susceptibility that has developed in recent birth cohorts
                                                                                              due to low MCV coverage and to protect children who did not respond to
	**	In 2000, 191 countries were requested to report to WHO; by 2018, 194                      MCV1. Data on SIAs by country are available at https://www.who.int/
    member states were requested to report because of the creation of new                     immunization/monitoring_surveillance/data/Summary_Measles_SIAs.xls?ua.
    countries. For district level coverage, only countries that reported data are in      	§§	A discarded case is defined as a suspected case that has been investigated and
    the numerator, whereas the denominator is all WHO countries in that year                  determined not to be measles or rubella using 1) laboratory testing in a
    (191–194) regardless of whether they reported data.                                       proficient laboratory or 2) epidemiological linkage to a laboratory-confirmed
                                                                                              outbreak of a communicable disease that is not measles or rubella. The
                                                                                              discarded case rate is used to measure the sensitivity of measles surveillance.
  The MMWR series of publications is published by the Center for Surveillance, Epidemiology, and Laboratory Services, Centers for Disease Control and Prevention (CDC),
  U.S. Department of Health and Human Services, Atlanta, GA 30329-4027.
  Suggested citation: [Author names; first three, then et al., if more than six.] [Report title]. MMWR Morb Mortal Wkly Rep 2019;68:[inclusive page numbers].
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1106	             MMWR / December 6, 2019 / Vol. 68 / No. 48                  US Department of Health and Human Services/Centers for Disease Control and Prevention
                                                                 Morbidity and Mortality Weekly Report
TABLE. Estimates of coverage with the first and second doses of measles-containing vaccine administered through routine immunization
services, reported measles cases and incidence, and estimated measles cases and deaths,* by World Health Organization (WHO) region —
worldwide, 2000 and 2018
                                           % of                                                                                                          Cumulative
                                         reporting                                                                                                          no. of
                         %               countries                                                                                          Estimated      measles
WHO region/           countries            with      No. of  Measles                                                                        % measles       deaths
Year (no. of    %    with ≥90%    %     <5 measles reported incidence                             Estimated no.             Estimated no.    mortality    averted by
countries in  MCV1†     MCV1    MCV2† cases per measles        per                               of measles cases         of measles deaths reduction,   vaccination,
region)      coverage coverage coverage 1 million   cases§ 1 million§,¶                              (95% CI)                  (95% CI)     2000–2018    2000–2018
African
2000 (46)           53           9           5             8       520,102         836               10,723,800                 345,600        85        12,146,900
                                                                                               (7,718,000–17,119,100)     (236,300–562,100)
2018 (47)           74         30           26           47        125,426         118                1,759,000                  52,600
                                                                                                (1,141,200–6,002,100)      (32,000–173,400)
Americas
2000 (35)        93            63           65           89          1,754               2      8,770 (4,400–35,100)            NA**           NA            97,100
2018 (35)        90            57           82           91         16,327              24    83,500 (41,800–334,200)            NA
Eastern Mediterranean
2000 (21)        71            57           28           17         38,592              90           2,427,900                  37,900         −29        2,820,600
                                                                                               (1,503,800–3,892,900)       (21,700–64,000)
2018 (21)           82         57           74           35         64,722              93           2,852,700                  49,000
                                                                                               (2,293,700–4,265,200)       (36,700–72,500)
European
2000 (52)           91         62           48           45         37,421              50            860,176                    400           50            95,600
                                                                                                (227,200–6,668,300)          (100–2,200)
2018 (53)           95         89           91           34         82,523              98   861,800 (71,100–6,480,300)          200
                                                                                                                              (0–1,800)
South-East Asia
2000 (10)           63         30            3             0        78,558              51           11,411,900                141,700         72         6,825,400
                                                                                               (8,764,600–15,572,100)     (100,100–199,600)
2018 (11)           89         82           80           36         34,741              18            3,803,800                 39,100
                                                                                                (2,856,700–6,702,900)      (24,800–76,000)
Western Pacific
2000 (27)           85         48            2           30        177,052         105                2,786,500                 10,000         87         1,213,200
                                                                                               (1,923,900–22,167,600)       (5,200–74,200)
2018 (27)           95         59           91           77         29,497              15             408,400                   1,300
                                                                                                 (42,500–16,753,800)       (100–2,786,500)
Total
2000 (191)          72         45          18            38       853,479          145              28,219,100            535,600              73        23,198,800
                                                                                             (20,141,900–65,455,000) (363,400–901,700)
2018 (194)          86         61          69            54       353,236               49           9,769,400            142,300
                                                                                              (6,446,900–40,538,500) (93,600–387,900)
Abbreviations: CI = confidence interval; MCV1 = first dose of measles-containing vaccine; MCV2 = second dose of measles-containing vaccine; NA = not applicable;
UNICEF = United Nations Children’s Fund.
	 *	Mortality estimates for 2000 might be different from previous reports. When the model used to generate estimated measles deaths is rerun each year using new
    WHO/UINICEF estimates of national immunization coverage (WUENIC) data, as well as updated surveillance data, adjusted results for each year, including the
    baseline year, are also produced and updated.
	†	Coverage data: WUENIC. Geneva, Switzerland, World Health Organization; 2019. https://www.who.int/immunization/monitoring_surveillance/data/en.
	§	Reported measles cases (2018) from World Health Organization. Geneva, Switzerland, World Health Organization; 2019. https://apps.who.int/immunization_
    monitoring/globalsummary/timeseries/tsincidencemeasles.html.
	¶	Cases per 1 million population; population data from United Nations, Department of Economic and Social Affairs, Population Division, 2019. Any country not
    reporting data on measles cases for that year was removed from both the numerator and denominator.
	**	Estimated measles mortality was too low to allow reliable measurement of mortality reduction.
  Countries report the number of incident measles cases¶¶                                    decreased 59%, from 853,479 in 2000 to 353,236 in 2018,
to WHO and UNICEF annually using the Joint Reporting                                         and measles incidence decreased 66%, from 145 to 49 cases
Form.*** During 2000–2018, the number of reported cases                                      per million population (Table). However, compared with the
                                                                                             reported number of cases (132,413) and incidence (19 cases
	¶¶	https://apps.who.int/immunization_monitoring/globalsummary/timeseries/
                                                                                             per million) in 2016, both cases and incidence increased in 2018,
      tsincidencemeasles.html; data reported here as of July 15, 2019. Only countries
      that reported data are in the numerator, whereas the denominator is all WHO
                                                                                             the highest levels since 2011 (Figure 1). Compared with 2016,
      countries in that year (191–194) regardless of whether they reported data.             the number of measles cases increased 167% globally, including
	***	 https://www.who.int/immunization/monitoring_surveillance/routine/                      increases of 246% in AFR, 16,732% in AMR, 931% in EMR,
      reporting/en/.
US Department of Health and Human Services/Centers for Disease Control and Prevention                    MMWR / December 6, 2019 / Vol. 68 / No. 48	             1107
                                                             Morbidity and Mortality Weekly Report
1,791% in EUR, and 26% in SEAR.††† In WPR, the number                                 Korea, Oman, Singapore, Switzerland, and Timor-Leste were
of measles cases decreased 49%, primarily because of decreased                        verified as having achieved elimination during 2018. No AFR
cases in China. In 2018, five (3%) of 179 reporting countries                         country had yet been verified as having eliminated measles. In
(Democratic Republic of the Congo, Liberia, Madagascar,                               the AMR, a region that had achieved verification of measles
Somalia, and Ukraine) had measles incidences >600 per million                         elimination in 2016, endemic measles transmission was rees-
and accounted for 45% (157,239 cases) of all reported cases                           tablished in Venezuela in 2018 and in Brazil in 2019. In EUR,
worldwide. The percentage of reporting countries with annual                          endemic measles transmission was reestablished during 2018
measles incidence of <5 cases per million population increased                        in Albania, Czechia, Greece, and the United Kingdom.
from 38% (64 of 169) in 2000 to 70% (125 of 178) in 2016,
                                                                                                                    Discussion
then decreased to 54% (96 of 179) in 2018 (Table) (Figure 1).
  Genotypes of viruses isolated from measles cases were                                  During 2000–2018, increased coverage with MCV1 and
reported by 95 (73%) of 131 countries reporting at least one                          MCV2, widespread SIAs, and other elimination efforts con-
measles case in 2018. Among the 24 recognized measles virus                           tributed to a 66% decrease in reported measles incidence, a
genotypes, 11 were detected during 2005–2008, eight during                            73% reduction in estimated measles mortality, and a reduction
2009–2014, six in 2016, five in 2017, and four in 2018 (4).                           in the number of circulating measles virus genotypes world-
In 2018, among 7,155 reported virus sequences, 3,011 (42%)                            wide. Despite this progress, the 2015 global milestones were
were genotype B3; 20 (0.3%) were D4; 3,774 (53%) were D8;                             not met: MCV1 coverage has stagnated for nearly a decade,
and 350 (5%) were H1.                                                                 MCV2 coverage is only 69%, and suboptimal surveillance
                                                                                      limits data-driven actions. Reported measles incidence has
Measles Case and Mortality Estimates                                                  increased in five regions since 2016 and estimated global
  A previously described model for estimating measles cases                           measles mortality has increased since 2017. Increased measles
and deaths was updated with new measles vaccination cover-                            cases and outbreaks occurred mostly among unvaccinated
age data, case data, and United Nations population estimates                          persons, including school-aged children and young adults.
for all countries during 2000–2018, enabling derivation of a                             The causes of the measles resurgence during 2017–2018 are
new series of disease and mortality estimates (5). For countries                      multifactorial and vary by country. Large sustained outbreaks
with anomalous estimates in previous iterations, the model was                        in a few countries with weak immunization systems accounted
modified slightly to generate mortality estimates consistent with                     for most reported measles cases during this time. In addition,
observed case data. Based on the updated data, the estimated                          unidentified or unaddressed immunity gaps in older children
number of measles cases decreased 65%, from 28,219,100                                and adults, because of historically weak routine immunization
(95% confidence interval [CI]  =  20,141,900–65,455,000)                              programs and inadequate SIA coverage, led to sustained trans-
in 2000 to 9,769,400 (95% CI = 6,446,900–40,538,500) in                               mission in some countries that previously had low incidence
2018. During this period, estimated measles deaths decreased                          or had eliminated measles (6). As well, international travel
73%, from 535,600 (95% CI = 363,400–901,700) to 142,300                               by infected persons, including both unimmunized foreign
(95% CI = 93,600–387,900) (Table) (Figure 2). During 2000–                            visitors and unimmunized residents traveling abroad and
2018, compared with no measles vaccination, measles vac-                              returning home, facilitated international spread of measles.
cination prevented an estimated 23.2 million deaths globally.                         For example, in 2018, Israel experienced nearly 100 measles
                                                                                      importations from multiple countries including Philippines,
Regional Verification of Measles Elimination                                          Ukraine, and the United Kingdom; and importations from
   By the end of 2018, 82 (42%) countries had been veri-                              Israel and Ukraine led to outbreaks in the United States (7).
fied as having eliminated measles. Austria, Bahrain, North                            Sustaining elimination in the face of frequent importations
                                                                                      and gaps in vaccination coverage presents challenges. For
	†††	Twenty-five  countries did not report case data in 2000: Algeria, Austria,       example, after having experienced >100 importations in
    Belgium, Comoros, Equatorial Guinea, Fiji, Finland, Germany, Guinea-              2018 as a consequence of inadequate vaccination coverage,
    Bissau, Ireland, Libya, Mauritania, Monaco, Montenegro, North Korea,
    Samoa, Saudi Arabia, Seychelles, Slovenia. Solomon Islands, South Sudan.
                                                                                      endemic measles virus transmission has been reestablished in
    Switzerland, Timor-Leste, Tuvalu, and Yemen. Sixteen countries did not            the United Kingdom. Countries such as Cambodia, which,
    report case data in 2016: Belgium, Cabo Verde, Cook Islands, Haiti, Ireland,      through sustained efforts, identified and closed immunity
    Italy, Kiribati, Marshall Islands, Monaco, Morocco, Mozambique, Niue,
    Samoa, Singapore, Tuvalu, and Vanuatu. Fifteen countries did not report           gaps to achieve elimination, but which border countries with
    case data in 2018: Belarus, France, Israel, Kuwait, Luxembourg, Marshall          ongoing endemic transmission, must remain vigilant to iden-
    Islands, Mauritius, Montenegro, Nauru, Niue, North Macedonia, Palau,              tify and stop measles outbreaks rapidly. Before international
    Seychelles, Tuvalu, and United States. Countries do not provide WHO with
    their reasons for not reporting case data.                                        travel, travelers from all countries should ensure they have
1108	              MMWR / December 6, 2019 / Vol. 68 / No. 48              US Department of Health and Human Services/Centers for Disease Control and Prevention
                                                        Morbidity and Mortality Weekly Report
FIGURE 1. Reported measles incidence per 1 million persons — worldwide, 2000, 2016, and 2018
2000
2016
2018
US Department of Health and Human Services/Centers for Disease Control and Prevention   MMWR / December 6, 2019 / Vol. 68 / No. 48	   1109
                                                                                      Morbidity and Mortality Weekly Report
FIGURE 2. Estimated annual number of measles deaths, with and without vaccination programs — worldwide, 2000–2018*
2.5
                                   2.0
No. of measles deaths (millions)
1.5
1.0
0.5
                                   0.0
                                         2000     2001   2002   2003   2004    2005   2006    2007     2008   2009    2010   2011    2012   2013    2014   2015    2016   2017    2018
                                                                                                              Year
*	Deaths prevented by vaccination are estimated by the area between estimated deaths with vaccination and those without vaccination (cumulative total of 23.2 million
  deaths prevented during 2000–2018). Error bars represent upper and lower 95% confidence limits around the point estimate.
been appropriately vaccinated against measles. Progress toward                                                     The findings in this report are subject to at least two limita-
measles elimination will regress without a unified effort by all                                                tions. First, large differences between estimated and reported
communities and countries.                                                                                      incidence indicate overall low surveillance sensitivity, making
   Evaluations of routine immunization programs to identify                                                     comparisons between regions difficult to interpret. Second,
barriers to vaccination indicate that children miss MCV1 and                                                    the measles mortality model estimates might be affected by
MCV2 doses for many reasons, including families’ limited                                                        biases in model inputs, including vaccination coverage and
awareness of the need for vaccination, limited access to or                                                     surveillance data.
financial barriers to receiving vaccination; vaccine stock-outs;                                                   The trends of increasing measles incidence and mortality
political instability; and vaccine hesitancy and misinformation.                                                are reversible; however, further progress toward achieving
WHO’s Global Routine Immunization Strategies and Practices                                                      elimination goals will require 1) resource commitments to
and The Guide to Tailoring Immunization Programmes pro-                                                         strengthen routine immunization systems, close historical
vides guidance on identifying demand and supply barriers to                                                     immunity gaps, and improve surveillance to rapidly detect and
routine vaccination and strengthening immunization programs                                                     respond to cases, and 2) a new perspective to use measles as
(8,9). Outbreaks should serve as opportunities to investigate                                                   a stimulus and guide to improving immunization programs.
underlying causes of undervaccination and to design specific                                                    To achieve measles elimination, all communities and countries
routine immunization strengthening activities to prevent future                                                 need coordinated efforts aiming to reach ≥95% coverage with
outbreaks. In addition, population immunity gaps should be                                                      2 doses of measles vaccine.
identified through triangulation of data, including surveil-                                                       As the period covered by the Global Vaccine Action Plan
lance and vaccination coverage data, and should be targeted                                                     2012–2020 approaches its end, a new vision and strategy for
by vaccination activities.                                                                                      accelerated progress on immunization for 2021–2030 is being
1110	                                           MMWR / December 6, 2019 / Vol. 68 / No. 48           US Department of Health and Human Services/Centers for Disease Control and Prevention
                                                         Morbidity and Mortality Weekly Report
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 Immunization and Respiratory Diseases, CDC.                                    	10.	World Health Organization. Immunization agenda 2030. Geneva,
                                                                                     Switzerland: World Health Organization; 2018. https://www.who.int/
  All authors have completed and submitted the International                         immunization/immunization_agenda_2030/en/
Committee of Medical Journal Editors form for disclosure of potential
conflicts of interest. No potential conflicts of interest were disclosed.
US Department of Health and Human Services/Centers for Disease Control and Prevention       MMWR / December 6, 2019 / Vol. 68 / No. 48	                   1111
                                                              Morbidity and Mortality Weekly Report
   In 2005, the World Health Organization (WHO) Western                               national Expanded Program on Immunization (EPI). In 1986,
Pacific Region countries, including China, resolved to eliminate                      the schedule was changed to include 2 MCV doses, with the
measles by 2012 or as soon as feasible thereafter (1). As of 2018,                    first dose given at age 8 months and the second at age 7 years
nine* of the 37 Western Pacific Region countries or areas† had                        (the age of administration of the second dose was lowered to
eliminated§ measles. China’s Measles Elimination Action Plan                          18 months in 2005, as recommended in WHO guidelines).**
2006–2012 included strengthening routine immunization;                                Administrative coverage, calculated as the number of vaccine
conducting measles risk assessments, followed by supplementary                        doses administered divided by estimated target population,
immunization activities (SIAs) with measles-containing vaccine                        is assessed monthly at the township level (the lowest admin-
(MCV) at national and subnational levels; strengthening surveil-                      istrative level), aggregated to the national level using vaccine
lance and laboratory capacity; and investigating and responding                       administration and target population data reported by EPI
to measles outbreaks. Most recently, progress toward measles                          clinics, and reported annually to WHO and the United Nations
elimination in China was described in a 2014 report document-                         Children’s Fund (UNICEF). During 2013–2018, annual esti-
ing measles elimination efforts in China during 2008–2012 and                         mates of coverage with the first MCV dose (MCV1) and the
a resurgence in 2013 (2). This report describes progress toward                       second dose (MCV2) were both 99%. In 2016, among the
measles elimination in China during January 2013–June 2019.¶                          40,787 townships in China’s 31 mainland provinces, 40,089
Measles incidence per million persons decreased from 20.4 in                          (98%) reported >90% MCV2 coverage by age 3 years. In 2010,
2013 to 2.8 in 2018; reported measles-related deaths decreased                        a nationwide SIA was conducted, during which 103 million
from 32 in 2015 to one in 2018 and no deaths in 2019 through                          children received MCV regardless of previous vaccination his-
June. Measles elimination in China can be achieved through                            tory. Each province then used a measles risk assessment tool
strengthening the immunization program’s existing strategy                            developed by the Chinese Center for Disease Control and
by ensuring sufficient vaccine supply; continuing to improve                          Prevention (China CDC) to determine the need for additional
laboratory-supported surveillance, outbreak investigation and                         selective or nonselective follow-up SIAs in their jurisdiction.
response; strengthening school entry vaccination record checks;                       During 2013–2018, 56.9 million children and adults were
vaccinating students who do not have documentation of receipt                         vaccinated in these follow-up SIAs. During this time, the
of 2 doses of measles-rubella vaccine; and vaccinating health care                    risk assessment–based SIA target population sizes decreased
professionals and other adults at risk for measles.                                   approximately sixfold, from 23 million in 2013 to 3 million
                                                                                      in 2018. To ensure that school children are protected from
Immunization Activities                                                               vaccine-preventable diseases, China has had a national require-
  China introduced measles vaccine in 1965 and implemented                            ment since 2005 that vaccination status is checked upon entry
nationwide measles vaccination in 1978 with the start of the                          to kindergarten and primary school; children with missing vac-
                                                                                      cine doses are referred to EPI clinics for catch-up vaccination.
*	Australia, Brunei, Cambodia, Hong Kong (China), Macao (China), Japan,               Although the school entry record check is required, receiving
  New Zealand, South Korea, and Singapore.                                            missing vaccine doses is not mandatory, and unvaccinated
†	The Western Pacific Region, one of the six regions of WHO, consists of 37
  countries and areas with a population of almost 1.9 billion, including American     children are not excluded from school.
  Samoa (USA), Australia, Brunei, Cambodia, China, Cook Islands, Federated
  States of Micronesia, Fiji, French Polynesia (France), Guam (USA), Hong Kong
  (China), Japan, Kiribati, Laos, Macao (China), Malaysia, Marshall Islands,
                                                                                      Measles Surveillance Activities
  Mongolia, Nauru, New Caledonia (France), New Zealand, Niue, Northern                  Measles has been nationally notifiable since the 1950s, with
  Mariana Islands (USA), Palau, Papua New Guinea, Philippines, Pitcairn Islands       aggregated data reported annually to the National Notifiable
  (UK), Samoa, Singapore, Solomon Islands, South Korea, Tokelau (New
  Zealand), Tonga, Tuvalu, Vanuatu, Vietnam, and Wallis and Futuna (France).          Disease Reporting System (NNDRS). In 1997, China devel-
§	Measles elimination is defined as the absence of endemic measles virus
                                                                                      oped a case-based, laboratory-supported measles surveillance
  transmission in a defined geographical area (e.g., region or country) for
  ≥12 months with a well-performing surveillance system.
                                                                                      system, initially in selected provinces and in parallel with
¶	Population of 1.4 billion, not including Hong Kong Special Administrative           NNDRS. The two surveillance systems were unified in 2009.
  Region, Macao Special Administrative Region, and Taiwan.
                                                                                      	**	 https://www.who.int/immunization/documents/positionpapers/en/.
1112	            MMWR / December 6, 2019 / Vol. 68 / No. 48                US Department of Health and Human Services/Centers for Disease Control and Prevention
                                                        Morbidity and Mortality Weekly Report
Every suspected case is investigated by county-level China                         Consultations with international partners, including CDC,
CDC staff members using a standardized, in-person question-                     WHO, UNICEF, the World Bank, the Japan International
naire; outbreaks are investigated and reported by local China                   Cooperation Agency, and the Measles & Rubella Initiative§§
CDC staff members as needed. China’s Measles Laboratory                         have helped guide activities. Research and evaluation have
Network comprises 31 provincial laboratories and one national                   also provided valuable information for measles elimination.
laboratory that has been accredited by WHO as a Regional                        MCVs used in China were found to be highly immunogenic
Reference Laboratory since 2003†† (3). Rubella case-based                       in infants aged 8 months, and coadministration of Japanese
surveillance was integrated into the measles surveillance system                encephalitis vaccine did not reduce measles seroconversion rates
in 2014. Since 2011, measles surveillance in China has met or                   (6). In a Chinese study of risk factors for measles in children
exceeded WHO surveillance quality criteria (4).                                 aged 8 months–14 years after a nationwide SIA, the estimated
                                                                                measles vaccine effectiveness among children was >95%, and
Measles Incidence and Epidemiologic                                             being unvaccinated was the leading risk factor for infection
Characteristics                                                                 (7). In addition, hospitals were important sites of measles virus
  From 2013 to 2014, measles incidence per million persons                      transmission, and internal migration was associated with risk
increased from 20.4 to 38.8; incidence subsequently declined                    for measles acquisition (7). In a 2013 assessment of vaccination
each year, reaching 2.8 in 2018 (Table). Among confirmed                        coverage in China during an outbreak following a nationwide
cases reported during 2013–2018, the case count among                           SIA, administrative vaccination coverage might have overesti-
infants aged <8 months (younger than the routinely recom-                       mated coverage by 5%–10% (8). Finally, application of false
mended age for MCV1) decreased from 8,448 (31%) in 2013                         contraindications to vaccination led to missed opportunities
to 532 (14%) in 2018 (Figure). Among the 1,839 measles cases                    to immunize some children against measles (9).
reported in the first half of 2019, 109 (5.9%) were among                          Research and evaluation have led to action. In 2015, the
infants aged <8 months, 965 (52.5%) were among children                         Chinese Ministry of Health recommended measles vaccina-
aged 8 months–14 years, and 765 (41.6%) were among persons                      tion for hospital professionals, and in 2017, China CDC and
aged ≥15 years. During 2013–2018, the number, size, and                         WHO hosted an international consultation to improve cov-
duration of measles outbreaks decreased steadily. Until 2019,                   erage assessment methods. Immunogenicity results provided
almost all (98.9%) cases that had a measles virus genotype result               evidence of adequate seroconversion when MCV1 is given
were found to be the indigenous genotype H1. However, in                        at age 8 months, satisfying the WHO evidence requirement
the first half of 2019, this pattern changed: 82% of genotyped                  for routine MCV1 administration before age 9 months. EPI
measles viruses were found to be import-associated genotypes                    clinics are now directed to vaccinate migrant children after
B3 or D8 (Table) (5).                                                           3 months of residence.
                                                                                   Mathematical modeling has also proven useful. A metapopu-
                              Discussion                                        lation measles virus transmission model that estimated the
   Progress toward measles elimination in China has been                        basic reproduction number for measles to be 18 nationwide
considerable. Measles cases, incidence, and outbreaks were all                  indicated that by 2014, the effective reproduction number was
at historically low levels in 2017 and 2018 and have decreased                  2.3 and was <1 in 14 provinces (10). The model predicts that
further through June 2019. Measles deaths are now rare in this                  measles will eventually be eliminated by the current strategy
country of 1.4 billion persons, with just one measles-associated                and that measles elimination can be accelerated by vaccinating
death reported in the last 18 months.                                           middle school and high school students lacking evidence of
   Laboratory-supported surveillance is critical for guiding                    receipt of 2 MCV doses.
measles elimination activities and strengthening routine                           The global nature of measles virus transmission is evident in
immunization. Outbreak investigations have identified gaps                      the patterns of measles virus importations and exportations.
in population immunity that are addressed with follow-up                        China’s measles surveillance system detects imported cases, and
immunization activities and program strengthening. The                          other countries have detected importations from China. For
risk assessment–based SIA target population sizes markedly                      example, during January 2016–June 2019, CDC detected only
decreased during 2013–2018, providing indirect evidence of                      one importation from China into the United States, compared
strengthened routine immunization service delivery.                             with six, four, and five such importations each year during
                                                                                	§§	The Measles & Rubella Initiative is a partnership established in 2001 as the Measles
	††	https://www.who.int/immunization/monitoring_surveillance/burden/
                                                                                   Initiative, spearheaded by the American Red Cross, CDC, the United Nations
   laboratory/measles/en/.
                                                                                   Foundation, UNICEF, and WHO. https://measlesrubellainitiative.org/.
US Department of Health and Human Services/Centers for Disease Control and Prevention         MMWR / December 6, 2019 / Vol. 68 / No. 48	                         1113
                                                            Morbidity and Mortality Weekly Report
TABLE. Epidemiologic characteristics of reported measles, cases, outbreaks, and isolate genotypes — China, January 2013–June 2019
                                                                                          Year
Characteristic              2013                 2014                2015                 2016                2017                 2018            Jan–Jun 2019
Measles incidence,              20.42               38.84               31.09                18.11                 4.31                2.84                 1.27
  cases per million
  population*
No. of 31 total                     1                    0                   0                    2                   4                   5                  NA
  provinces with
  incidence <1 per
  million population
No. of measles cases          27,646               52,628              42,361               24,820                5,941               3,940                1,839
Age group distribution, no. (%)
<8 mos                   8,448 (30.6)       11,193 (21.3)       10,575 (24.9)          4,652 (18.7)          950 (16.0)           542 (13.8)           109 (5.9)
8–23 mos                 8,227 (29.8)       11,928 (22.7)       10,070 (23.8)          5,910 (23.8)        1,786 (30.0)         1,231 (31.2)          530 (28.8)
2–6 yrs                  2,890 (10.4)          4,554 (8.6)         3,933 (9.3)         2,521 (10.2)          866 (14.6)           554 (14.1)          233 (12.7)
7–14 yrs                    648 (2.3)          1,696 (3.2)         1,313 (3.1)            971 (3.9)           445 (7.5)            273 (6.9)           202 (11)
≥15 yrs                  7,433 (26.9)       23,257 (44.2)       16,470 (38.9)         10,766 (43.4)        1,894 (31.9)         1,340 (34.0)          765 (41.6)
No. of vaccine doses received by measles patients aged 8 mos–14 yrs†
0                        7,636 (64.9)       10,964 (60.3)        9,158 (59.8)          5,332 (56.7)        1,146 (37.0)           629 (30.5)          127 (14.6)
1                        1,889 (16.1)         2,947 (16.2)       2,725 (17.8)          1,865 (19.8)          945 (30.5)           749 (36.4)          311 (35.9)
≥2                          724 (6.1)          1,577 (8.7)         1,453 (9.5)         1,128 (12.0)          495 (16.0)           551 (26.8)          340 (39.2)
Unknown                  1,516 (12.9)         2,690 (14.8)       1,980 (12.9)          1,077 (11.5)          511 (16.5)            129 (6.3)           89 (10.3)
Laboratory-                      96.3                 96.3               96.3                  96.1                85.6                 96.5                92.6
  confirmed (%)
Male sex (%)                     59.8                 56.5               56.2                 55.2                 57.2                57.6                 56.5
No. of measles-                    24                  28                   32                 18                     5                   1                    0
  related deaths
Measles deaths per              0.018               0.020               0.023                0.013                0.004               0.001                    0
  million population
Administrative                   99.6                 99.9               99.4                 99.4                 99.4                99.2                  NA
  MCV2 coverage (%)
No. of persons                  22.67               12.81                9.12                 4.06                 5.44                2.84                  NA
  vaccinated in SIAs
  (million)
No. of outbreaks                  109                 283                 329                    230                 38                   37                  18
  reported§
No. of outbreak-                  436               2,080               1,847                1,235                  238                 158                   83
  related cases
Median no. of cases          2 (2–29)           3 (2–271)           2 (2–278)            4 (2–122)             3 (2–59)            3 (2–29)             3 (2–14)
  per outbreak
  (range)
Median outbreak              8 (1–44)           7 (1–158)           8 (1–245)            85 (1–65)            13 (1–44)           11 (1–28)             9 (1–35)
  duration, days
  (range)
Measles virus         H1 (2,208); B3 (3); H1 (4,872); B3 (10); H1 (3,948); D9 (1)   H1 (2,467); D8 (3)   H1 (400); B3 (1);   H1 (155); B3 (3);    H1 (24); B3 (18);
  genotypes            D8 (51); D9 (47) D8 (3); D9 (9); G3 (1)                                               D8 (10)              D8 (8)              D8 (91)
  (no. identified)¶
Abbreviations: MCV = measles-containing vaccine; MCV2 = second dose of MCV; NA = not available; SIA = supplementary immunization activity.
* Incidence for January–June 2019 is annualized.
† No. of doses of MCV received by patient as of date of measles illness onset.
§ In China, a measles outbreak is defined as the occurrence, within a 10-day period, of either two or more confirmed measles cases in a village, district, school, or
  similar unit or five or more confirmed measles cases in a township.
¶ https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0218782.
2013–2015, respectively, supporting the understanding that                            to medical attention, and some medically attended cases might
cooperation among countries in fighting measles can benefit                           not be reported.
all countries.                                                                          China is approaching measles elimination, but the high
   The findings in this report are subject to at least two limita-                    transmissibility of measles virus, the size and density of
tions. First, administrative coverage can be affected by inaccu-                      China’s population, and the persistence of global measles virus
rate population estimates leading to under- or overestimates of                       transmission mean that measles will continue to be detected
coverage (8). Second, despite meeting WHO Western Pacific                             in China for years to come. Elimination can be achieved
Region surveillance quality indicators, surveillance might                            with an updated action plan that includes ensuring sufficient
underestimate incidence because not all measles patients come                         vaccine supply, continuing to improve laboratory-supported
1114	            MMWR / December 6, 2019 / Vol. 68 / No. 48              US Department of Health and Human Services/Centers for Disease Control and Prevention
                                                             Morbidity and Mortality Weekly Report
FIGURE. Confirmed measles cases,* by age group — China, January 2013–June 2019
          12,000
                                                                                                                      ≥15 years
                                                                                                                      8 months–14 years
          10,000                                                                                                      <8 months
               8,000
No. of cases
6,000
4,000
2,000
                  0
                       Jan Apr Jul Oct   Jan Apr Jul Oct   Jan Apr Jul Oct   Jan Apr Jul Oct       Jan Apr Jul Oct       Jan Apr Jul Oct       Jan Apr Jul Oct
                             2013              2014              2015              2016                  2017                  2018                  2019
* Confirmed cases include those that are laboratory-confirmed, epidemiologically linked to a laboratory-confirmed case, or clinically compatible.
US Department of Health and Human Services/Centers for Disease Control and Prevention             MMWR / December 6, 2019 / Vol. 68 / No. 48	                   1115
                                                          Morbidity and Mortality Weekly Report
7.	Hao L, Ma C, Wannemuehler KA, et al. Risk factors for measles in children       	 9.	Su Q, Zhang Y, Ma Y, et al. Measles imported to the United States by
   aged 8 months–14 years in China after nationwide measles campaign: a                 children adopted from China. Pediatrics 2015;135:e1032–7. https://
   multi-site case-control study, 2012–2013. Vaccine 2016;34:6545–52.                   doi.org/10.1542/peds.2014-1947
   https://doi.org/10.1016/j.vaccine.2016.02.005                                   	10.	Hao L, Glasser JW, Su Q, et al. Evaluating vaccination policies to accelerate
8.	Ma C, Li F, Zheng X, et al. Measles vaccine coverage estimates in an                 measles elimination in China: a meta-population modelling study. Int J
   outbreak three years after the nation-wide campaign in China: implications           Epidemiol 2019;48:1240–51. https://doi.org/10.1093/ije/dyz058
   for measles elimination, 2013. BMC Infect Dis 2015;15:23. https://doi.
   org/10.1186/s12879-015-0752-z
1116	           MMWR / December 6, 2019 / Vol. 68 / No. 48              US Department of Health and Human Services/Centers for Disease Control and Prevention
                                                        Morbidity and Mortality Weekly Report
On December 3, 2019, this report was posted as an MMWR Early Release on the MMWR website (https://www.cdc.gov/mmwr).
                                                                       Abstract
     Background: Approximately 38,000 new human immunodeficiency virus (HIV) infections occur in the United States
     each year; these infections can be prevented. A proposed national initiative, Ending the HIV Epidemic: A Plan for
     America, incorporates three strategies (diagnose, treat, and prevent HIV infection) and seeks to leverage testing, treatment,
     and preexposure prophylaxis (PrEP) to reduce new HIV infections in the United States by at least 90% by 2030. Targets
     to reach this goal include that at least 95% of persons with HIV receive a diagnosis, 95% of persons with diagnosed HIV
     infection have a suppressed viral load, and 50% of those at increased risk for acquiring HIV are prescribed PrEP. Using
     surveillance, pharmacy, and other data, CDC determined the current status of these three initiative strategies.
     Methods: CDC analyzed HIV surveillance data to estimate annual number of new HIV infections (2013–2017); estimate
     the percentage of infections that were diagnosed (2017); and determine the percentage of persons with diagnosed HIV
     infection with viral load suppression (2017). CDC analyzed surveillance, pharmacy, and other data to estimate PrEP
     coverage, reported as a percentage and calculated as the number of persons who were prescribed PrEP divided by the
     estimated number of persons with indications for PrEP.
     Results: The number of new HIV infections remained stable from 2013 (38,500) to 2017 (37,500) (p = 0.448). In
     2017, an estimated 85.8% of infections were diagnosed. Among 854,206 persons with diagnosed HIV infection in
     42 jurisdictions with complete reporting of laboratory data, 62.7% had a suppressed viral load. Among an estimated
     1.2 million persons with indications for use of PrEP, 18.1% had been prescribed PrEP in 2018.
     Conclusion: Accelerated efforts to diagnose, treat, and prevent HIV infection are needed to achieve the U.S. goal of at
     least 90% reduction in the number of new HIV infections by 2030.
US Department of Health and Human Services/Centers for Disease Control and Prevention     MMWR / December 6, 2019 / Vol. 68 / No. 48	       1117
                                                              Morbidity and Mortality Weekly Report
                                                                                       prescription for >28 days and for whom TDF/FTC was not
  Summary
                                                                                       prescribed for HIV treatment, hepatitis B treatment, or HIV
  What is already known about this topic?
                                                                                       postexposure prophylaxis (5,9). NHSS, National Health and
  The approximately 38,000 new human immunodeficiency virus                            Nutrition Examination Survey, and U.S. Census data were
  (HIV) infections that occur annually in the United States are
  preventable through testing, treatment, and preexposure
                                                                                       used to estimate the number of persons aged ≥16 years with
  prophylaxis (PrEP). A proposed initiative seeks to reduce new                        indications for PrEP (10). PrEP coverage, reported as a per-
  infections by at least 90% by 2030. The targets for the initiative                   centage, was calculated as the number of persons who were
  are at least 95% for testing and treatment and 50% for PrEP.                         prescribed PrEP divided by the estimated number of persons
  What is added by this report?                                                        who had indications for PrEP. To estimate PrEP coverage by
  In 2017, 85.8% of persons with HIV infection had received a                          race/ethnicity, the proportion among those with recorded race/
  diagnosis, and 62.7% of persons with diagnosed HIV infection                         ethnicity data was applied to those with missing race/ethnicity
  had a suppressed viral load. In 2018, PrEP had been prescribed                       data. Analyses were conducted using SAS statistical software
  to 18.1% of persons with indications.                                                (version.9.4; SAS Institute).
  What are the implications for public health practice?
  Accelerated efforts to diagnose, treat, and prevent HIV infection                    Results
  are urgently needed.                                                                   The annual number of new HIV infections remained stable
                                                                                       from 2013 (38,500) to 2017 (37,500) (p = 0.448). Among
Methods                                                                                the estimated 1.2 million persons living with HIV infection
   CDC analyzed data reported to the National HIV                                      in 2017, 85.8% (95% confidence interval [CI] = 84.3–87.5)
Surveillance System (NHSS) from the beginning of the                                   had received a laboratory-confirmed diagnosis of HIV
epidemic in the early 1980s through June 2019 from 50                                  infection. The lowest percentages of diagnosed HIV infec-
states and the District of Columbia (DC) for persons aged                              tions were among persons aged 13–24 years (54.6%,
≥13 years with diagnosed HIV infection. A CD4-depletion                                95% CI  =  52.7–56.7), American Indians/Alaska Natives
model* (8) was applied to NHSS data to estimate 1) the                                 (79.5%, 95% CI  =  58.7–100.0), and heterosexual males
annual number of new HIV infections (2013–2017); 2) the                                (82.0%, 95% CI  =  76.5–88.3), compared with other age,
total number of persons living with HIV (diagnosed and                                 racial/ethnic, or transmission risk groups. (Table 1). The per-
undiagnosed infection, or prevalence) at year-end 2017; and                            centage of diagnosed infections ranged from 79.7% in Nevada
3) the percentage of persons with HIV infection who had                                to 94.4% in New Jersey (Table 2).
received a diagnosis.                                                                    In 2017, 62.7% of 854,206 persons with diagnosed HIV
   NHSS data reported from 41 states and DC that had com-                              infections in 42 jurisdictions had a suppressed viral load
plete laboratory reporting of viral load test results were used                        (Table 1). The lowest percentages of persons with viral sup-
to determine two viral suppression measures: viral suppression                         pression were those aged 13–24 years (56.9%), blacks/African
among persons with diagnosed HIV infection in the jurisdic-                            Americans (blacks) (57.4%), and males who inject drugs
tion at year-end 2017 and viral suppression within 6 months                            (52.0%), compared with other age, racial/ethnic, and transmis-
of diagnosis among persons with HIV infection diagnosed                                sion risk groups. The percentage of persons with a suppressed
during 2017. These 42 jurisdictions represent 89% of persons                           viral load ranged from 47.0% in South Dakota to 79.6% in
with diagnosed HIV infection in the United States.                                     Iowa (Table 2). The percentage of persons with a suppressed
   CDC analyzed national pharmacy data from the IQVIA                                  viral load within 6 months of diagnosis of HIV infection was
Real World Data–Longitudinal Prescriptions database to                                 61.5 overall and <59% in 12 jurisdictions (Figure).
estimate the number of persons aged ≥16 years who were                                   An estimated 1.2 million persons had indications for PrEP;
prescribed PrEP in 2017 and 2018. The annual number of                                 12.6% were prescribed PrEP in 2017 and 18.1% in 2018. In
PrEP prescriptions for persons aged ≥16 years was determined                           2018, PrEP coverage was three times as high among males
using an algorithm that included persons who had at least one                          (20.8%) as among females (6.6%) (Table 1). Compared with
tenofovir disoproxil fumarate and emtricitabine (TDF/FTC)                              other age groups, the lowest PrEP coverage rate was among
                                                                                       persons aged 16–24 years (11.4%). Adjusting for missing
*	The first CD4 test result after HIV diagnosis and a CD4-depletion model              race/ethnicity, PrEP coverage was 5.9% for blacks, 10.9% for
  indicating disease progression or duration after infection were used to estimate
  the number of new HIV infections and total prevalence (persons living with
                                                                                       Hispanics/Latinos, and 42.1% for whites. PrEP coverage ranged
  diagnosed or undiagnosed infection) among adults and adolescents in the              from 5.0% in Wyoming to 41.1% in New York (Table 2).
  United States.
1118	             MMWR / December 6, 2019 / Vol. 68 / No. 48                US Department of Health and Human Services/Centers for Disease Control and Prevention
                                                             Morbidity and Mortality Weekly Report
TABLE 1. Percentage of diagnosed human immunodeficiency virus (HIV) infections, viral suppression among persons with diagnosed HIV
infection, and prescription of preexposure prophylaxis (PrEP) for persons with indications, by demographic and transmission categories —
United States, 2017 and 2018
                                                                                                        2017                                           2018
                                                                             Diagnosed HIV infection,*             Viral suppression,†,§      PrEP coverage,¶,**,††
Characteristic                                                                     % (95% CI)                               %                          %
Sex
Male                                                                                84.9 (83.1–86.8)                       63.3                         20.8
Female                                                                              89.1 (86.1–92.3)                       60.8                          6.6
Age group (yrs)
13–24                                                                               54.6 (52.7–56.7)                       56.9                         11.4
25–34                                                                               70.4 (69.4–71.4)                       58.1                         21.5
35–44                                                                               84.5 (83.6–85.4)                       60.2                         21.9
45–54                                                                               92.2 (91.5–92.9)                       64.6                         17.4
≥55                                                                                 94.7 (93.9–95.5)                       65.5                         14.4
Race/Ethnicity
American Indian/Alaska Native                                                      79.5 (58.7–100.0)                       62.0                          —§§
Asian                                                                               83.7 (72.6–98.9)                       68.3                          —§§
Black/African American                                                              85.5 (83.1–88.0)                       57.4                          5.9
Hispanic/Latino                                                                     83.0 (79.8–86.5)                       62.3                         10.9
Native Hawaiian/Other Pacific Islander                                                           —*                        65.0                          —§§
White                                                                               88.6 (85.8–91.5)                       69.3                         42.1
Multiple races                                                                      86.7 (80.5–94.0)                       69.9                          —§§
Transmission category
Male-to-male sexual contact                                                         83.7 (81.7–85.8)                       65.7                          —§§
Injection drug use                                                                  93.8 (89.1–99.0)                        —¶¶                          —§§
  Male                                                                            93.3 (87.0–100.0)                        52.0                          —§§
  Female                                                                          94.4 (87.9–100.0)                        58.4                          —§§
Male-to-male sexual contact and injection drug use                                  92.0 (85.9–99.0)                       63.1                          —§§
Heterosexual contact                                                                85.9 (83.0–89.0)                        —¶¶                          —§§
  Male                                                                              82.0 (76.5–88.3)                       57.6                          —§§
  Female                                                                            87.7 (84.4–91.2)                       61.8                          —§§
Total                                                                           85.8*** (84.3–87.5)                        62.7***                      18.1
Abbreviation: CI = confidence interval.
	 *	Percentage of diagnosed infections calculated as the number of persons who received a diagnosis of HIV infection divided by the number of persons living with
     HIV (diagnosed and undiagnosed; n = 1,153,400). Dash in this column indicates estimate not available for some populations because of high relative standard errors.
	 †	Percentage viral suppression calculated as the number of persons with a viral load test result of <200 copies of HIV RNA per mL at last test divided by the number
     of persons living with diagnosed HIV infection (n = 854,206).
	 §	Includes data for 42 jurisdictions (41 states and District of Columbia) with complete laboratory reporting. These jurisdictions include Alabama, Alaska, California,
     Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Illinois, Indiana, Iowa, Louisiana, Maine, Maryland, Massachusetts, Michigan,
     Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Rhode
     Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, Wisconsin, and Wyoming.
	 ¶	PrEP coverage, calculated as the number of persons who were prescribed PrEP (n = 219,691 in 2018) divided by estimated number of persons with indications for
     PrEP (n = 1,211,777 in 2017).
	 **	Total includes 1,605 persons prescribed PrEP with unknown jurisdiction and 143,168 persons prescribed PrEP with unknown/unavailable race/ethnicity. PrEP
     coverage for race/ethnicity was adjusted applying the distribution of records with known race/ethnicity to records with missing race/ethnicity.
	 ††	Age group for PrEP coverage is 16–24 years.
	 §§	Dashes indicate data not available. IQVIA data source has incomplete race/ethnicity data and does not collect data on transmission risk category.
	 ¶¶	Percentage viral suppression is presented for each sex within transmission category.
	***	Total includes persons with HIV infection attributed to hemophilia, blood transfusion, perinatal exposure, or whose risk factor was not reported or not identified.
US Department of Health and Human Services/Centers for Disease Control and Prevention                  MMWR / December 6, 2019 / Vol. 68 / No. 48	                1119
                                                     Morbidity and Mortality Weekly Report
TABLE 2. Percentage of diagnosed human immunodeficiency virus (HIV) infections, viral suppression among persons with diagnosed HIV
infection, and prescription of preexposure prophylaxis (PrEP) for persons with indications, by jurisdiction — United States, 2017 and 2018
                                                                         2017                                                      2018
                                          Diagnosed HIV infection,*                  Viral suppression,†,§                  PrEP coverage,¶,**
Jurisdiction                                    % (95% CI)                                    %                                     %
Alabama                                       83.9 (72.2–100.0)                              57.3                                  13.2
Alaska                                                      —*                               78.7                                   8.3
Arizona                                        84.7 (74.1–98.8)                               —§                                   13.1
Arkansas                                      82.2 (66.3–100.0)                               —§                                   12.5
California                                     85.9 (81.6–90.5)                              66.6                                  21.9
Colorado                                      85.8 (74.5–100.0)                              58.6                                  13.3
Connecticut                                   88.6 (75.1–100.0)                              66.8                                  21.3
Delaware                                      85.5 (64.9–100.0)                              67.7                                   8.7
District of Columbia                          88.6 (76.9–100.0)                              56.0                                  36.5
Florida                                        87.0 (82.3–92.3)                              63.0                                  11.1
Georgia                                        82.0 (76.0–89.1)                              58.3                                  15.2
Hawaii                                        85.5 (63.1–100.0)                              68.2                                  12.2
Idaho                                         96.6 (65.3–100.0)††                             —§                                   10.0
Illinois                                       85.6 (77.9–94.9)                              53.8                                  26.8
Indiana                                       83.8 (71.5–100.0)                              61.3                                  10.1
Iowa                                          82.3 (61.6–100.0)                              79.6                                  28.1
Kansas                                        84.0 (63.3–100.0)                               —§                                   13.9
Kentucky                                      82.7 (68.3–100.0)                               —§                                    9.2
Louisiana                                      81.2 (71.7–93.7)                              64.7                                  22.8
Maine                                         85.9 (59.8–100.0)                              78.3                                  11.9
Maryland                                       86.1 (78.1–95.9)                              58.2                                  14.3
Massachusetts                                 89.5 (79.6–100.0)                              70.9                                  33.4
Michigan                                       83.1 (72.2–97.9)                              72.2                                  12.2
Minnesota                                     84.9 (71.8–100.0)                              69.1                                  15.1
Mississippi                                   87.9 (73.8–100.0)                              49.2                                  12.9
Missouri                                      85.2 (73.4–100.0)                              66.2                                  14.2
Montana                                                     —*                               78.5                                   6.6
See table footnotes on next page.
access to HIV-related services among American Indians/Alaska                    Developing or scaling up the implementation of evidence-
Natives (13), and 3) low patient and provider perceived risk for                based interventions is also important for improving adherence
HIV acquisition among heterosexuals (14). The percentage of                     and viral suppression among youths and blacks. For example,
diagnosed HIV infections also varied geographically, possibly                   one successful approach to improving viral suppression among
reflecting differences in access to and implementation of HIV                   blacks with HIV infection is an integrated care model that
testing and highlighting the need for developing tailored test-                 includes collaboration between community pharmacists and
ing strategies (15). CDC recommends routine screening of all                    HIV medical care providers to develop individualized care
persons aged 13–64 years at least once in their lifetime (16),                  plans that address HIV treatment challenges (19).
yet recent findings indicate that only 40% of persons aged                        Since 2012, prompt treatment with antiretroviral therapy
≥18 years in the United States have ever been tested for HIV                    after diagnosis of HIV infection, regardless of stage of disease,
(15). HIV testing guidelines also recommend at least annual                     has been recommended (20). Yet only 61.5% of persons with
testing for persons at high risk for acquiring HIV. Accelerating                HIV infection diagnosed in 2017 had a suppressed viral load
implementation of HIV testing strategies such as integrated                     within 6 months of diagnosis. Low viral suppression rates
and routinized HIV screening in health care settings, scaling                   within 6 months of HIV diagnosis (59%) occurred mainly in
up partner notification, social/sexual network screening, and                   Southern states, which are already disproportionately affected
mass distribution of HIV self-test kits (15) might facilitate                   by HIV (1). One study in patients with high rates of mental
early diagnosis.                                                                health illness, drug use, and housing instability illustrated suc-
  The lowest percentages of viral suppression were found                        cess in reaching viral suppression within 1 year using multidis-
among young persons, blacks, and heterosexual males.                            ciplinary care and other support (21). To rapidly improve viral
Adherence to medication is critical to viral suppression. Factors               suppression for all populations, additional research is needed
associated with lower adherence or viral suppression include                    to identify interventions that will achieve viral suppression
young age (17) and, for blacks, include health care coverage,                   within 6 months of diagnosis, especially among populations
homelessness, and incarceration (18). Expanded efforts must                     facing severe health and socioeconomic challenges, including
address these and other social and economic barriers to care.                   homelessness (22).
1120	           MMWR / December 6, 2019 / Vol. 68 / No. 48          US Department of Health and Human Services/Centers for Disease Control and Prevention
                                                             Morbidity and Mortality Weekly Report
TABLE 2. (Continued) Percentage of diagnosed human immunodeficiency virus (HIV) infections, viral suppression among persons with diagnosed
HIV infection, and prescription of preexposure prophylaxis (PrEP) for persons with indications, by jurisdiction — United States, 2017 and 2018
                                                                                 2017                                                           2018
                                                 Diagnosed HIV infection,*                    Viral suppression,†,§                      PrEP coverage,¶,**
Jurisdiction                                           % (95% CI)                                      %                                         %
Nebraska                                             82.7 (59.8–100.0)                                64.2                                      18.8
Nevada                                                79.7 (67.4–97.4)                                  —§                                      13.5
New Hampshire                                        85.5 (57.0–100.0)††                              70.3                                      21.0
New Jersey                                           94.4 (85.6–100.0)                                  —§                                      16.8
New Mexico                                           81.2 (61.7–100.0)                                68.5                                      12.0
New York                                              88.3 (84.0–93.0)                                63.2                                      41.1
North Carolina                                        87.3 (79.0–97.5)                                63.2                                      11.1
North Dakota                                                       —*                                 77.7                                      14.8
Ohio                                                  83.9 (74.8–95.5)                                54.7                                      11.6
Oklahoma                                             82.9 (66.8–100.0)                                59.0                                       7.6
Oregon                                               85.9 (71.4–100.0)                                63.7                                      13.6
Pennsylvania                                         92.7 (84.6–100.0)                                  —§                                      22.9
Rhode Island                                         84.5 (62.2–100.0)                                76.6                                      18.9
South Carolina                                        84.1 (73.9–97.5)                                66.3                                      11.7
South Dakota                                                       —*                                 47.0                                      11.3
Tennessee                                             84.9 (74.2–99.2)                                57.6                                      11.4
Texas                                                 81.1 (76.3–86.6)                                61.3                                      14.3
Utah                                                 81.9 (61.1–100.0)                                62.5                                      21.9
Vermont                                              93.0 (59.0–100.0)††                                —§                                      17.7
Virginia                                              86.9 (77.5–98.8)                                55.2                                       9.5
Washington                                           88.3 (76.9–100.0)                                78.6                                      25.0
West Virginia                                        86.9 (61.4–100.0)                                58.9                                       9.7
Wisconsin                                            83.7 (68.3–100.0)                                74.5                                      14.3
Wyoming                                                            —*                                 76.8                                       5.0
Total                                                85.8 (84.3–87.5)                                 62.7                                      18.1
Abbreviation: CI = confidence interval.
	 *	Percentage of diagnosed infections calculated as the number of persons who received a diagnosis of HIV infection divided by the number of persons living with
    HIV (diagnosed and undiagnosed). Dashes in this column indicate estimates not available for some jurisdictions because of high relative standard errors.
	 †	Percentage viral suppression calculated as the number of persons with a viral load test result of <200 copies of HIV RNA per mL at last test divided by the number
    of persons living with diagnosed HIV infection.
	 §	Includes data for 42 jurisdictions (41 states and District of Columbia) with complete laboratory reporting. These jurisdictions include Alabama, Alaska, California,
    Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Illinois, Indiana, Iowa, Louisiana, Maine, Maryland, Massachusetts, Michigan,
    Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Rhode Island,
    South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, Wisconsin, and Wyoming. Data were incomplete or not reported for nine
    jurisdictions, as indicated by dashes.
	 ¶	PrEP coverage calculated as the number of persons who were prescribed PrEP (in 2018) divided by estimated number of persons with indications for PrEP (in 2017).
	**	Total includes 1,605 PrEP users with unknown jurisdiction.
	††	Estimate does not meet the standard of reliability; use with caution.
   In 2019, the United States Preventive Services Task Force                            in racial/ethnic minority populations has not been equitable.
issued a Grade A recommendation† that clinicians offer                                  Improving PrEP coverage will require targeted improvements
PrEP to persons at substantial risk for HIV acquisition (4).                            in PrEP awareness, prescribing practices, and use in under-
Overall, PrEP coverage was 9% in 2016 (5) and improved                                  reached demographic groups, especially among young persons,
to 18% in 2018. Similar to earlier findings, PrEP coverage                              blacks, and Hispanics/Latinos at risk for acquiring HIV. CDC
in this analysis was especially low in young persons (aged                              has developed a campaign, Prescribe HIV Prevention, which
16–24 years) compared with that in other age groups, and                                is designed to help clinicians provide PrEP to prevent acquisi-
racial/ethnic and geographic disparities in PrEP prescription                           tion of HIV (24).
exist (5). In 2018, approximately 43% of HIV diagnoses were                                The findings in this report are subject to at least three limita-
among blacks, and 26% were among Hispanics/Latinos (23).                                tions. First, estimation of the number of new infections and
However, PrEP coverage among whites was seven times as high                             percentage of undiagnosed infections relies on the assumption
as that among blacks and four times as high as that among                               that persons received no treatment before their first CD4 test.
Hispanics/Latinos, suggesting that PrEP delivery to persons                             The CD4 counts of persons with evidence of previous anti-
                                                                                        retroviral therapy use or viral suppression are excluded from
†	Grade A recommendation is a recommendation with high certainty
                                                                                        the analysis, minimizing the impact of prior treatment on the
 that the net benefit of the intervention is substantial. https://www.                  HIV depletion model. Second, viral suppression measures in
 uspreventiveservicestaskforce.org/Page/Name/grade-definitions.
US Department of Health and Human Services/Centers for Disease Control and Prevention               MMWR / December 6, 2019 / Vol. 68 / No. 48	                   1121
                                                               Morbidity and Mortality Weekly Report
FIGURE. Viral suppression*,†,§ within 6 months of diagnosis of human                       Accelerated efforts to diagnose, treat, and provide PrEP
immunodeficiency virus (HIV) infection among persons aged                               while addressing disparities, are urgently needed to reach the
≥13 years — United States,¶ 2017
                                                                                        targets for the Ending the HIV Epidemic: A Plan for America
                                                                                        initiative. These accelerated efforts, along with other prevention
                                                                                        strategies such as quickly responding to increases in diagnoses
                                                                                        of HIV infections, will be needed to meet the ambitious U.S.
                                                                                        goal of at least a 90% reduction in the number of new HIV
                                                                                        infections by 2030.
                                                                            DC
                                                                                         Corresponding author: Norma S. Harris, nharris@cdc.gov, 404-718-8559.
                                                                                        	1Division of HIV/AIDS Prevention, National Center for HIV, Viral Hepatitis,
                                                                                         STD, and TB Prevention, CDC; 2National Center for HIV, Viral Hepatitis,
                                                                                         STD, and TB Prevention, CDC.
                                                                                         All authors have completed and submitted the International
                                                72%–95%                                 Committee of Medical Journal Editors form for disclosure of potential
                                                65%–71%                                 conflicts of interest. No potential conflicts of interest were disclosed.
                                                60%–64%
                                                51%–59%                                                                 References
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US Department of Health and Human Services/Centers for Disease Control and Prevention                MMWR / December 6, 2019 / Vol. 68 / No. 48	                     1123
                                                        Morbidity and Mortality Weekly Report
QuickStats
                                         FROM THE NATIONAL CENTER FOR HEALTH STATISTICS
                                         2012–2013
                                         2017–2018
80
                                    60
                       Percentage
40
20
                                     0
                                         Total                Hispanic          White,              Black,             Asian,
                                                                              non-Hispanic       non-Hispanic       non-Hispanic
                                                                           Race/Ethnicity
                       *	With 95% confidence intervals indicated by error bars.
                       †	Based on a question in the Sample Adult section that asked “About how long has it been since you last saw
                         or talked to a doctor or other health care professional about your own health? Include doctors seen while a
                         patient in a hospital.”
                       §	Categories shown for non-Hispanic respondents are only for those who selected one racial group; respondents
                         had the option to select more than one racial group. Hispanic respondents might be of any race or combination
                         of races. Only selected groups are shown in the individual race/ethnicity bars, but total bar shows results for
                         all adults aged 18–64 years.
                       ¶	Estimates are based on household interviews of a sample of the civilian, noninstitutionalized U.S. population
                         in 2012 and 2013 combined and 2017 and 2018 combined. Estimates are derived from the National Health
                         Interview Survey Sample Adult component.
        The percentage of adults aged 18–64 years who had seen or talked to a health care professional in the past 12 months increased
        from 79.3% in 2012–2013 to 82.1% in 2017–2018. There was an increase in the percentage of Hispanic (67.0% to 73.6%), non-
        Hispanic white (82.8% to 84.9%), non-Hispanic black (80.0% to 83.2%), and non-Hispanic Asian (75.8% to 78.8%) adults who
        had seen or talked to a health care professional in the past 12 months between those two periods. During 2012–2013 as well
        as 2017–2018, non-Hispanic white adults were the most likely and Hispanic adults were the least likely to have seen or talked
        to a health care professional in the past 12 months.
        Source: National Health Interview Survey, 2012, 2013, 2017, and 2018 data. https://www.cdc.gov/nchs/nhis.htm.
        Reported by: Michael E. Martinez, MPH, MHSA, bmd7@cdc.gov, 301-458-4758; Tainya C. Clarke, PhD.
1124	         MMWR / December 6, 2019 / Vol. 68 / No. 48              US Department of Health and Human Services/Centers for Disease Control and Prevention
                                                       Morbidity and Mortality Weekly Report
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