Question 1

Which of the following best describes the difference between endemic and epidemic diseases?

Accepted Answer

Endemic diseases are always present in a population, while epidemic diseases are characterized by a sudden increase in cases above normal expectations.

Question 2

A patient contracts influenza after sharing utensils with an infected person. Which type of transmission does this scenario illustrate?

Accepted Answer

Indirect contact transmission

Question 3

Which of the following is an example of a mechanical vector?

Accepted Answer

Housefly carrying bacteria from feces to food

Question 4

Which equation correctly represents the calculation of incidence rate in epidemiology?

Accepted Answer

$$Incidence\ Rate = \frac{Number\ of\ new\ cases}{Total\ population\ at\ risk}$$

Question 5

Which of the following is NOT a preventive measure for hospital-acquired infections (HAIs)?

Accepted Answer

Sharing equipment between patients without cleaning

Question 6

A disease that cannot be transmitted from one person to another is classified as:

Accepted Answer

Noncommunicable

Question 7

Which stage of disease is characterized by mild signs and symptoms before the illness becomes severe?

Accepted Answer

Prodromal phase

Question 8

Which of the following is an example of an endogenous source of infection?

Accepted Answer

Bacteria from the host's own body when immunity is weak

Question 9

Which of the following best describes the role of Ignaz Semmelweis in infection control?

Accepted Answer

He introduced handwashing in hospitals to reduce the spread of germs.

Question 10

Which of the following is a biological vector for disease transmission?

Accepted Answer

Mosquito transmitting malaria parasites

Question 11

Which equation correctly represents the calculation of prevalence rate?

Accepted Answer

$$Prevalence\ Rate = \frac{Number\ of\ existing\ cases}{Total\ population}$$

Question 12

Which of the following is an example of a noninfectious etiological agent?

Accepted Answer

Botulinum toxin

Question 13

Which of the following best describes a chronic carrier?

Accepted Answer

A person who harbors the pathogen for years and may show symptoms

Question 14

Which of the following is a correct example of a communicable disease?

Accepted Answer

Influenza

Question 15

Which of the following is NOT a stage in the progression of infectious disease?

Accepted Answer

Remission phase

Question 16

Which of the following is an example of direct contact transmission?

Accepted Answer

Sexual contact

Question 17

Which of the following is a correct definition of morbidity?

Accepted Answer

The rate of illness or spread of disease in a group of people

Question 18

Which of the following is a correct example of an exogenous source of infection?

Accepted Answer

Bacteria from atmospheric germs

Question 19

Which of the following is a correct example of an acute illness?

Accepted Answer

Common cold

Question 20

Which of the following is a correct example of a zoonotic disease?

Accepted Answer

Rabies

Epidemiology and Disease Transmission: Microbiology Study Notes

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