Scribd
Upload
127 views3 pages

Mock Outbreak Exercise: M. Serra Biol 2420 Lab Report 11 Student Name

1. Student #3 appears to be the source of the hepatitis B outbreak among the group of students. 2. Student #13 was the index case, which is the first case of an outbreak or epidemic. 3. After identifying student #3 as the source, a flow chart was created showing the spread from student #3 to students #4, 7, 8, then from those students to others, accounting for how each of the 8 infected students contracted the disease.

Uploaded by

Dennis Muthusi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
127 views3 pages

Mock Outbreak Exercise: M. Serra Biol 2420 Lab Report 11 Student Name

1. Student #3 appears to be the source of the hepatitis B outbreak among the group of students. 2. Student #13 was the index case, which is the first case of an outbreak or epidemic. 3. After identifying student #3 as the source, a flow chart was created showing the spread from student #3 to students #4, 7, 8, then from those students to others, accounting for how each of the 8 infected students contracted the disease.

Uploaded by

Dennis Muthusi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 3

M.

Serra BIOL 2420 LAB REPORT 11 Student Name:


-----------------

MOCK OUTBREAK EXERCISE


On 6/20/2019 student # 13 arrived at the ER with fever, minor jaundice, headache, and
abdominal pain. Shortly after, several other individuals from the same educational institution
were attended at other ER facilities, and clinics with similar signs and symptoms. Upon testing,
it was determined the students had contracted hepatitis B. Health authorities were informed.
The outbreak appeared among a group of students who met two months earlier for a weekend of
wild partying. Hepatitis B, a disease transmitted by body fluids, is characterized by jaundice,
weakness, abdominal pain, nausea, and fever. The County Health Department, and the local
health facilities have stepped in to identify the possible source of the infection. The identification
of the source of the outbreak is needed to prevent further spread.

1.-( 1 pt.) Mention two behaviors that could lead to the spread of hepatitis B.

2.- (1 pt.) Contrast the mode of transmission of hepatitis B with those of COVID 19 virus
(SARS COV 2 virus).

3.- (1 pt.) Why is an epidemic of hepatitis B unlikely?

After extensive questioning of all the students involved, the following close contact incidents
have been stablished between the exposed population. Each student has been assigned a number.
The two numbers in the boxes showed the two students who had close contact. The order of the
boxes recreates the sequential order of the close contact events that occurred within the two days
of exposure.

Contact 1st 2nd 3rd 4th 5th 6th 7th 8th


sequenc
e
Students 3 <-> 11 15 <-> 4 7 <-> 3 8 <-> 3 2 <-> 6 4 <-> 3 11 <-> 12 10 <-> 15
who had
close
contact

Contact 9th 10th 11th 12th 13th 14th 15th


sequence
Students 5<->1 9 <-> 8 13 <-> 8 14 <-> 7 2 <-> 15 13 <-> 12 10 <-> 7
who had
close
M. Serra BIOL 2420 LAB REPORT 11 Student Name:
-----------------

Contact 9th 10th 11th 12th 13th 14th 15th


sequence
contact

Here is a list of the students who were infected, as evidenced by antigen and antibody testing.
3, 4, 7, 8, 9, 10, 13, 14, 12
Here is the list of uninfected students as evidenced by antigen and antibody testing.
1,2,5,6,11,15

4.- (2 pts.) Which student appears to be the source of the outbreak?

5.- (2 pts.) Which student was the index case? What is the index case of an outbrake or
epidemic?

6.- (2pts.) Create a flow chart that plots the spread of the outbreak, starting at the source.
Account for each of the infected students, and when/by whom they were infected.

7.- (2 pts.) What is the etiology of the outbreak?

8.- (2 pts.) What is the reservoir of the infectious agent causing the outbreak?

9.- (2 pts.) Define ‘incubation time”. What is the incubation time for Hepatitis B in this
outbreak?

10.- (2 pts.) Distinguish an outbreak from an epidemic.


M. Serra BIOL 2420 LAB REPORT 11 Student Name:
-----------------

11.- (2 pts.) What are some of the signs of hepatitis B?

What are some of the symptoms of hepatitis B?

12.- (1 pt.) Calculate the attack rate of the mock outbreak. Show your work.
Attack rate: # people infected / total # of people exposed x 100

You might also like