Question 1

Which of the following best describes the purpose of airborne precautions in a healthcare setting?

Accepted Answer

To use protective devices that reduce the spread of infectious agents through the air, such as rubella, varicella, and Mycobacterium tuberculosis.

Question 2

A patient is admitted with suspected MRSA infection. Which of the following precautions should be prioritized to prevent transmission?

Accepted Answer

Contact precautions

Question 3

Which agency is responsible for monitoring mortality rates throughout the country and providing guidelines for disease control?

Accepted Answer

Centers for Disease Control and Prevention (CDC)

Question 4

A chemical substance applied to living tissue to kill or slow the growth of microorganisms is called:

Accepted Answer

Antiseptic agent

Question 5

Which of the following is NOT considered personal protective equipment (PPE)?

Accepted Answer

Hand sanitizer

Question 6

A nurse is caring for a patient with influenza. Which transmission-based precaution should be implemented?

Accepted Answer

Droplet precautions

Question 7

Which of the following best describes the chain of infection?

Accepted Answer

The process by which infections are transmitted, including the source, mode of transmission, and susceptible host.

Question 8

A patient with a low white blood cell count is placed in a special room to reduce the risk of infection. This is an example of:

Accepted Answer

Protective (reverse) isolation precautions

Question 9

Which of the following statements about Zika virus is correct?

Accepted Answer

Infection during pregnancy can cause birth defects, including microcephaly.

Question 10

Which of the following is a correct application of the asepsis technique?

Accepted Answer

Cleaning solutions and sterile procedures to prevent infection and growth of microorganisms.

Question 11

A healthcare worker is exposed to a biological substance that can threaten health, such as bacteria or viruses. This substance is classified as:

Accepted Answer

Biohazard

Question 12

Which of the following is the correct definition of a susceptible host in the chain of infection?

Accepted Answer

An individual at risk of acquiring an infection due to factors such as age, drug use, or immune system status.

Question 13

Which precaution is used to reduce the transmission of diseases such as pertussis, meningitis, and rubella?

Accepted Answer

Droplet precautions

Question 14

A patient is placed in an intensive care unit (ICU) due to severe infection. What is the primary reason for this placement?

Accepted Answer

To provide advanced monitoring and care for patients who are more susceptible to infection.

Question 15

Which of the following is a function of the Occupational Safety and Health Administration (OSHA)?

Accepted Answer

Providing guidelines for safe work environments and responding to complaints regarding workplace safety.

Question 16

Which of the following is the correct formula for calculating the rate of infection transmission in a population?

Accepted Answer

$$R = \frac{I}{N}$$

Question 17

A healthcare worker uses gloves, gowns, and face shields when caring for a patient with a known blood-borne pathogen. This is an example of:

Accepted Answer

Personal protective equipment (PPE)

Question 18

Which of the following is the best definition of communicable disease?

Accepted Answer

A category of diseases resulting from the transmission of infectious microorganisms.

Question 19

Which of the following is a correct example of a fomite?

Accepted Answer

A contaminated doorknob transmitting infection.

Question 20

Which of the following is the most appropriate action when disposing of waste from patients in isolation?

Accepted Answer

Use double-bagging technique with two trash bags.

Microbiology: Infection Control, Disease Transmission, and Precautions

Study Guide - Practice Questions