Stages of
INFECTION
PRE-TEST
Direction:
Multiple choice: write the
letter of the best answer
on your paper/notebook.
PRE-TEST
1. What is the first stage of infection?
A. Convalescence
B. Illness
C. Incubation
D. Prodromal
PRE-TEST
2. What is the second stage of infection which
starts from the onset of non-specific signs and
symptoms such as fever?
A. Convalescence
B. Illness
C. Incubation
D. Prodroma
PRE-TEST
3. What is the third stage of infection which
begins when more specific signs and
symptoms appear?
A. Convalescence
B. Illness
C. Incubation
D. Prodromal
PRE-TEST
4. In what stage of infection do acute
symptoms of infection start to disappear?
A. Convalescence
B. Illness
C. Incubation
D. Prodromal
PRE-TEST
5. Which of the following is not a sign and
symptom of the common colds during the
illness stage?
A. High Fever
B. Runny Nose
C. Sore Throat
D. Urinary Tract Infection
PRE-TEST
6. What do you call the invasion and
multiplication of microorganisms such as
bacteria, viruses and parasites that are not
normally present within the body?
A. Diseases C. Stages
B. Infections D. All of these
PRE-TEST
7. What stage of infection shows the interval
between the entrance of pathogen into the
body and appearance of first symptoms?
A. Convalescence
B. Illness
C. Incubation
D. Prodromal
PRE-TEST
8. Which of the following is NOT a
common sign and symptom during
prodromal stage flu?
A. headache
B. runny nose
C. fever
D. toothache
PRE-TEST
9. What can you do to prevent
transmission of infectious diseases?
A. Maintaining good hygiene
B. Wearing face mask and face shield
C. Avoiding direct contact with infected
people
D. All of the above
PRE-TEST
10. What type of diseases is caused by the
direct and indirect spread of pathogens
from one person to another?
A. lifestyle related diseases
B. hereditary diseases
C. communicable diseases
D. non-communicable diseases
PRE-TEST
11. What are the diseases caused by
organisms such as bacteria, viruses, fungi,
or parasites?
A. allergy
B. cancer
C. infectious diseases
D. non-infectious diseases
PRE-TEST
12. What is the other term for
convalescence stage?
A. Illness Period
B. Incubation Stage
C. Prodromal Stage
D. Recovery Stage
PRE-TEST
13. What should the sick person do if
he/she gets infected?
A. maintain personal hygiene
B. staying away from other people
C. taking the advice of the doctors
D. all of these
PRE-TEST
14. How long is the incubation period
for chickenpox?
A. 1 to 2 days
B. 1 to 3 days
C. 12 to 25 days
D. 2 to 3 weeks
PRE-TEST
15. How long is the incubation period
for mumps?
A. 1 to 2 days
B. 1 to 3 days
C. 12 to 25 days
D. 2 to 3 weeks
Stages of
INFECTION
ACTIVITY 1: CHAIN INFO
Directions: In your activity notebook, write the
chain of infections in the box based on the story
below. Remember that the elements in the chain
are sequentially arranged. Choose your answer
from the pool of words/ phrases below. Do this
in your activity notebook.
ACTIVITY 1: CHAIN INFO
ACTIVITY 1: CHAIN INFO
ACTIVITY 1: CHAIN INFO
ACTIVITY 1: CHAIN INFO
Guide Questions:
1. What kind of pathogens have the ability to cause Peter's
diseases?
2. Where do these microorganisms thrive and reproduce?
3. Where is the reservoir of the microorganisms?
4. How did the microorganisms transfer to John?
5. Where did the microorganisms enter John?
6. Who is the next host?
ACTIVITY 2: RELATED INFECTION
Directions: Using the graphic organizer
below, write eight (8) words that are related
to infection in the box. The first one is done
for you. Write your answers in your activity
notebook.
ACTIVITY 2: RELATED INFECTION
INFECTION
When a person is sick, the first stage of infection
is incubation. It is the period starting from the entry of
the pathogen until the appearance of the first sign. For
example, chickenpox, takes two (2) to three (3) weeks
of incubation; common colds takes one (1) to two (2)
days; , while influenza holds one (1) to three (3) days;
and mumps holds twelve (12) to twenty-five (25) days.
INFECTION
The second stage is called the
prodromal stage which starts from
the onset of non-specific signs and
symptoms such as fever, headache,
and fatigue.
INFECTION
The illness stage begins when more
specific signs and symptoms appear. For
example, the common cold is characterized
by sore throat, sinus congestion, and rhinitis,
mumps manifested by earache, high fever,
and salivary gland swelling.
INFECTION
The last stage of infection is an interval when
acute symptoms of infection disappear. The
length of recovery depends on the severity of the
infection and the sick person’s general state of
health. Recovery may take several days to months
and is called the convalescence stage.
INFECTION
Communicable diseases result from the interaction of an
infectious agent called pathogens, host, and environment.
Pathogens are disease causing organisms which can be
viruses, bacteria, fungi, among others. Transmission occurs
when the pathogen leaves its reservoir or host through a
portal of exit, which is delivered by some mode of
transmission, and enters through an appropriate portal of
entry to infect a susceptible host.
INFECTION
Reservoirs can be a place such as bodies of
water, animals, and humans. Examples of mode
of transmission include direct contact, air borne,
and vector borne. Examples of portal of exit and
entry include the nose, mouth, skin, and genitals
to name a few.
INFECTION
By understanding the chain of infection, the sick person must
intervene to prevent the infection from developing any further.
When a sick person acquires an infection, he/she must observe signs
and symptoms of infection and take appropriate actions to prevent
the spread like staying away from other people, and taking the
doctor’s advice seriously. Infection follows a progressive course as
explained above. The severity of the sick person’s illness depends on
the extent of the infection, the pathogenicity of the microorganism,
and the susceptibility of the host.
ACTIVITY 3: STAGES OF INFECTION
Directions: Enumerate the four
stages of infection and describe
each stage. Write your answer
in your activity notebook.
ACTIVITY 4: DESCRIBE THE GRAPH
Directions: Study the graph below
and answer the questions that
follow. Write your answers in your
activity notebook.
ACTIVITY 4: DESCRIBE THE GRAPH
1. Where does the arc start and end?
What does it mean?
2. Describe the flow of the arc. If you
noticed, it started low, then up, then,
it goes down.
ACTIVITY 4: DESCRIBE THE GRAPH
1 ST
PERFORMANCE
Directions: Create a poster
showing the four stages of
infection. Do this on a long bond
paper. Be guided by the rubrics
below.
1 ST
PERFORMANCE
ASSESSMENT
Direction:
Multiple choice: write the
letter of the best answer
on your paper/notebook.
ASSESSMENT
1. What is the second stage of infection which
starts from the onset of non-specific signs and
symptoms such as fever?
A. Convalescence
B. Illness
C. Incubation
D. Prodroma
ASSESSMENT
2. How long is the incubation period
for chickenpox?
A. 1 to 2 days
B. 1 to 3 days
C. 12 to 25 days
D. 2 to 3 weeks
ASSESSMENT
3. What is the first stage of infection?
A. Convalescence
B. Illness
C. Incubation
D. Prodromal
ASSESSMENT
4. What can you do to prevent
transmission of infectious diseases?
A. Maintaining good hygiene
B. Wearing face mask and face shield
C. Avoiding direct contact with infected
people
D. All of the above
ASSESSMENT
5. What should the sick person do if
he/she gets infected?
A. maintain personal hygiene
B. staying away from other people
C. taking the advice of the doctors
D. all of these
ASSESSMENT
6. In what stage of infection do acute
symptoms of infection start to disappear?
A. Convalescence
B. Illness
C. Incubation
D. Prodromal
ASSESSMENT
7. Which of the following is not a sign and
symptom of the common colds during the
illness stage?
A. High Fever
B. Runny Nose
C. Sore Throat
D. Urinary Tract Infection
ASSESSMENT
8. What is the third stage of infection which
begins when more specific signs and
symptoms appear?
A. Convalescence
B. Illness
C. Incubation
D. Prodromal
ASSESSMENT
9. What type of diseases is caused by the
direct and indirect spread of pathogens
from one person to another?
A. lifestyle related diseases
B. hereditary diseases
C. communicable diseases
D. non-communicable diseases
ASSESSMENT
10. What are the diseases caused by
organisms such as bacteria, viruses, fungi,
or parasites?
A. allergy
B. cancer
C. infectious diseases
D. non-infectious diseases
ASSESSMENT
11. What do you call the invasion and
multiplication of microorganisms such as
bacteria, viruses and parasites that are not
normally present within the body?
A. Diseases C. Stages
B. Infections D. All of these
ASSESSMENT
12. How long is the incubation period
for mumps?
A. 1 to 2 days
B. 1 to 3 days
C. 12 to 25 days
D. 2 to 3 weeks
ASSESSMENT
13. What stage of infection shows the interval
between the entrance of pathogen into the
body and appearance of first symptoms?
A. Convalescence
B. Illness
C. Incubation
D. Prodromal
ASSESSMENT
14. What is the other term for
convalescence stage?
A. Illness Period
B. Incubation Stage
C. Prodromal Stage
D. Recovery Stage
ASSESSMENT
15. Which of the following is NOT a
common sign and symptom during
prodromal stage flu?
A. headache
B. runny nose
C. fever
D. toothache
