CMI Infection Control & Sanitation 3

Question 1

What is biofilm, and why is it significant for infection control in cleaning programs?

Accepted Answer

A community of microorganisms encased in a protective matrix that adheres to surfaces, making pathogens harder to kill

Answer

A type of protective coating applied to floors; it is beneficial and should be preserved

Answer

A thin plastic film used to protect surfaces during cleaning; it has no infection control relevance

Answer

A visual indicator spray used to detect areas that have not been properly cleaned

Question 2

What does ATP (Adenosine Triphosphate) testing measure in the context of infection control?

Accepted Answer

The amount of organic biological residue remaining on a surface after cleaning

Answer

The pH level of cleaning solutions to confirm proper dilution

Answer

The concentration of disinfectant active ingredients on a treated surface

Answer

The temperature at which a surface was last cleaned

Question 3

When hands are visibly soiled, which hand hygiene method does the CDC recommend?

Accepted Answer

Washing with soap and water for at least 20 seconds

Answer

Alcohol-based hand sanitizer with at least 60% ethanol

Answer

Wiping hands with a disinfectant wipe for 30 seconds

Answer

Using a quaternary ammonium hand spray

Question 4

A nosocomial infection is defined as an infection that:

Accepted Answer

Is acquired by a patient during their stay in a healthcare facility

Answer

Is caused by a pathogen found only in outdoor environments

Answer

Originates from contaminated food served in a hospital cafeteria

Answer

Affects cleaning staff who handle biohazardous waste

Question 5

Which of the following practices BEST prevents pathogen transfer when cleaning a restroom with multiple stalls?

Accepted Answer

Clean from the least soiled areas (e.g., mirrors, counters) to the most soiled areas (e.g., toilets, floors)

Answer

Clean from the most soiled areas (e.g., toilets) to the least soiled areas (e.g., sink counters)

Answer

Use the same cloth for all surfaces to minimize chemical usage

Answer

Apply disinfectant to all surfaces simultaneously, then wipe them all in any order

Question 6

What is the purpose of a two-bucket mopping system in infection control?

Accepted Answer

To keep one bucket for the cleaning solution and one for rinsing the mop, reducing recontamination of floors

Answer

To separate mop heads by color for different floor types

Answer

To allow two custodians to mop simultaneously for efficiency

Answer

To store both the disinfectant and the rinse water at different temperatures

Question 7

Under the CMI infection control framework, which statement BEST describes the hierarchy of cleaning for an occupied healthcare or institutional facility?

Accepted Answer

Cleaning priority and disinfection level should be based on the risk of infection transmission for each area

Answer

All areas should receive the same cleaning frequency and disinfection level regardless of risk

Answer

High-traffic corridors always require higher disinfection than patient rooms

Answer

Restrooms are always the highest infection risk and should be cleaned before all other areas each day