1.

Question 1

1. What is the definition of an infectious disease?

A) An illness caused by a pathogen that causes symptoms immediately after transmission.
B) An illness caused by a specific infectious agent or its toxic product that results from transmission to a susceptible host.
C) A disease that results from the body’s immune system response to external stimuli.
D) An illness caused by an environmental factor, not involving any pathogen.

Answer 1

B

Question 2

2. Which of the following is an example of a vector transmission?

A) HIV transmitted through breastfeeding.
B) Tuberculosis transmitted via the air.
C) Malaria transmitted by mosquitoes.
D) Cholera transmitted through contaminated water.

Answer 2

C

Question 3

2. Which of the following is an example of indirect contact transmission?
   a) Herpes simplex virus via skin-to-skin contact
   b) Polio virus via oral-fecal route
   c) Rabies via animal bite
   d) HIV transmission via contaminated needle

Answer 3

D

Question 4

2. Which of the following is an example of indirect contact transmission?
   a) Herpes simplex virus via skin-to-skin contact
   b) Polio virus via oral-fecal route
   c) Rabies via animal bite
   d) HIV transmission via contaminated needle

Answer 4

D

Question 5

4. What is the primary vector for transmitting malaria?
   a) Fleas
   b) Ticks
   c) Mosquitoes
   d) Lice

Answer 5

C

Question 6

5. Which of the following best describes the incubation period of a disease?
   a) The time from infection to when the patient shows symptoms
   b) The time between the end of symptoms and when the infection is no longer transmissible
   c) The time when the infection is most contagious
   d) The time when the pathogen is latent in the body

Answer 6

A

Question 7

6. What is the main difference between latent and patent infection?
   a) Latent infection is symptomatic, while patent infection is asymptomatic
   b) Latent infection cannot be detected, while patent infection can be detected but shows no symptoms
   c) Latent infection is only detected through symptoms, while patent infection is undetectable
   d) Latent infection is always fatal, while patent infection is not

Answer 7

B

Question 8

7. What does the basic reproductive number (R0) indicate?
   a) The average number of new infections caused by one infected individual in a fully susceptible population
   b) The time it takes for a person to develop symptoms after contact with an infectious person
   c) The period during which a person is infectious to others
   d) The proportion of people that will not contract the disease in a population

Answer 8

A

Question 9

8. What does the net reproductive number (R) take into account?
   a) Only the number of symptomatic individuals in the population
   b) The proportion of susceptible individuals in the population
   c) The incubation period of a disease
   d) The total number of cases in a population

Answer 9

B

Question 10

9. Which of the following diseases has been eradicated through vaccination?
   a) Smallpox
   b) Polio
   c) Tuberculosis
   d) Malaria

Answer 10

A

Question 11

10. What is the typical transmission route for norovirus?
    a) Airborne droplets
    b) Bloodborne route
    c) Fecal-oral route
    d) Skin-to-skin contact

Answer 11

C

Question 12

11. Which of the following is an example of a vertical transmission route?
    a) HIV transmission via breastfeeding
    b) Malaria transmission via mosquito bite
    c) Hepatitis B transmission via blood transfusion
    d) Norovirus transmission via contaminated food

Answer 12

A

Question 13

12. Which of the following is a key characteristic of the infectious period of a disease?
    a) It is the time when the pathogen is undetectable in the body
    b) It is the period when the person shows symptoms and can transmit the disease
    c) It is the time when the immune system is clearing the infection
    d) It is when a person has a latent infection but can spread the disease

Answer 13

B

Question 14

13. What is the typical duration of an incubation period?
    a) The period when a person is asymptomatic but can still transmit the disease
    b) The time from exposure to the pathogen until the appearance of symptoms
    c) The time it takes for a disease to become latent in the host
    d) The period when the disease is most contagious

Answer 14

B

Question 15

14. Which of the following is the most common transmission route for cholera?
    a) Bloodborne
    b) Waterborne
    c) Airborne
    d) Direct contact

Answer 15

B

Question 16

15. Which of the following factors primarily affects the R0 of a disease?
    a) The time of year the disease is most prevalent
    b) The number of susceptible individuals in the population
    c) The host’s immune response
    d) The method of pathogen replication

Answer 16

B