Question 1

Which of the following best describes the difference between incidence and prevalence of a disease?

Accepted Answer

Incidence is the number of people who develop a disease during a particular time period, while prevalence is the number of people who have the disease at a specified time, regardless of when it first appeared.

Question 2

Which of the following is NOT one of Koch’s postulates?

Accepted Answer

The pathogen must be able to infect only humans and not animals.

Question 3

A patient develops a secondary infection after being treated for influenza. Which of the following best describes this scenario?

Accepted Answer

The patient has developed an opportunistic infection following a primary infection.

Question 4

Which of the following is an example of microbial antagonism?

Accepted Answer

Normal microbiota producing substances that inhibit the growth of pathogens.

Question 5

Which of the following best describes a pandemic disease?

Accepted Answer

A worldwide epidemic.

Question 6

Which of the following is a predisposing factor for disease?

Accepted Answer

All of the above

Question 7

A disease that is easily and rapidly spread from one host to another is best described as:

Accepted Answer

Contagious

Question 8

Which of the following is an example of vehicle transmission?

Accepted Answer

Transmission by contaminated water

Question 9

Which of the following best describes herd immunity?

Accepted Answer

Immunity in most of a population

Question 10

Which of the following is a function of the Centers for Disease Control and Prevention (CDC)?

Accepted Answer

Publishing the Morbidity and Mortality Weekly Report (MMWR)

Question 11

A hospital patient develops an infection after surgery. Which of the following best describes this infection?

Accepted Answer

A healthcare-associated infection (HAI)

Question 12

Which of the following is an example of biological transmission by a vector?

Accepted Answer

A mosquito transmitting malaria after the parasite reproduces inside it

Question 13

Which of the following is a reason for the emergence of new infectious diseases?

Accepted Answer

All of the above

Question 14

Which of the following best describes a mutualistic relationship between host and microbiota?

Accepted Answer

Both organisms benefit

Question 15

A disease that develops slowly and lasts for a long time is best described as:

Accepted Answer

Chronic

Question 16

Which of the following is an example of a nonliving reservoir of infection?

Accepted Answer

Contaminated soil

Question 17

Which of the following best describes the prodromal period of a disease?

Accepted Answer

Short period after incubation with early, mild symptoms

Question 18

Which of the following is a correct formula for calculating the morbidity rate?

Accepted Answer

$$ 	ext{Morbidity Rate} = \frac{	ext{Number of people affected}}{	ext{Total population}} 	imes 100 $$

Question 19

Which of the following is an example of analytical epidemiology?

Accepted Answer

Analyzing a particular disease to determine its probable cause (e.g., Florence Nightingale’s work on typhus)

Question 20

Which of the following best describes a compromised host?

Accepted Answer

An individual whose resistance to infection is impaired by disease, therapy, or burns

Principles of Disease and Epidemiology: Microbiology Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards