Microbiology and Parasitology - Lab
Module #2 Student Activity Sheet
LESSON TITLE: CHAIN OF INFECTION
A. LESSON PREVIEW/REVIEW (5 minutes)
Instruction: Enumerate the incidences of infection and give examples.
1. Sporadic diseases are diseases that occur occasionally and irregularly with no specific
pattern.
Examples: tetanus, gas gangrene, dengue
2. Epidemic diseases are diseases that occur in a greater number than what is expected in a
specific area over a specific time.
Examples: Cholera, Diarrhea
3. Pandemic that affects several countries or continents. “Global outbreak”
Examples: AIDS, Ebola, MERS-COV, COVID-19
4. Endemic diseases are those that are present in a population or community at times. They
usually involve few people during specific periods.
Examples: Chickenpox, Malaria
CHECK FOR UNDERSTANDING (30 minutes)
You will answer and rationalize this by yourself. This will be recorded as your quiz. One (1) point
will be given to correct answer and another one (1) point for the correct ratio. Superimpositions
or erasures in you answer/ratio is not allowed.
You are given 30 minutes for this activity:
Multiple Choice
1. Is the transmission of infectious disease through articles or substances that harbor the
organism until it is ingested or inoculated into the host?
a. Contact transmission
b. Vehicle transmission
c. Airborne transmission
d. Vector-borne transmission
Answer: B
Rationale: Vehicle Transmission is the transmission of infectious disease through articles or substances that
harbor the organism until it is ingested or inoculated into the host.
2. Occurs when intermediate carriers such as fleas, flies, and mosquitoes transfer microbes to
another living organism.
a. Contact transmission
b. Vehicle transmission
c. Airborne transmission
d. Vector-borne transmission
Answer:D
Module #2 Student Activity Sheet
LESSON TITLE: CHAIN OF INFECTION
A. LESSON PREVIEW/REVIEW (5 minutes)
Instruction: Enumerate the incidences of infection and give examples.
1. Sporadic diseases are diseases that occur occasionally and irregularly with no specific
pattern.
Examples: tetanus, gas gangrene, dengue
2. Epidemic diseases are diseases that occur in a greater number than what is expected in a
specific area over a specific time.
Examples: Cholera, Diarrhea
3. Pandemic that affects several countries or continents. “Global outbreak”
Examples: AIDS, Ebola, MERS-COV, COVID-19
4. Endemic diseases are those that are present in a population or community at times. They
usually involve few people during specific periods.
Examples: Chickenpox, Malaria
CHECK FOR UNDERSTANDING (30 minutes)
You will answer and rationalize this by yourself. This will be recorded as your quiz. One (1) point
will be given to correct answer and another one (1) point for the correct ratio. Superimpositions
or erasures in you answer/ratio is not allowed.
You are given 30 minutes for this activity:
Multiple Choice
1. Is the transmission of infectious disease through articles or substances that harbor the
organism until it is ingested or inoculated into the host?
a. Contact transmission
b. Vehicle transmission
c. Airborne transmission
d. Vector-borne transmission
Answer: B
Rationale: Vehicle Transmission is the transmission of infectious disease through articles or substances that
harbor the organism until it is ingested or inoculated into the host.
2. Occurs when intermediate carriers such as fleas, flies, and mosquitoes transfer microbes to
another living organism.
a. Contact transmission
b. Vehicle transmission
c. Airborne transmission
d. Vector-borne transmission
Answer:D
