NCAS Infection Control and Prevention 2

Question 1

Which of the following is the MOST effective strategy to prevent health care-associated infections (HAIs) at the community health facility level?

Accepted Answer

Consistent hand hygiene compliance by all health care workers

Answer

Hand hygiene compliance is the single most effective, evidence-based strategy for preventing health care-associated infections across all settings.

Question 2

A community nurse identifies a cluster of influenza cases in a school. The FIRST public health action should be:

Accepted Answer

Report the cluster to the local health department and implement influenza prevention measures

Answer

Reporting infectious disease clusters to the local health department is a mandatory public health duty, initiating official investigation and coordinated response.

Question 3

Which epidemiological concept describes the minimum proportion of a population that must be immune to prevent ongoing disease transmission?

Accepted Answer

Herd immunity threshold

Answer

The herd immunity threshold is the proportion of a population that must be immune (through vaccination or prior infection) to prevent sustained disease transmission.

Question 4

A community health nurse is providing education about Lyme disease prevention in an endemic area. Which protective measure is MOST effective?

Accepted Answer

Using EPA-registered insect repellents containing DEET and conducting daily tick checks

Answer

DEET-based repellents and daily tick checks after outdoor exposure are the most effective primary prevention strategies for Lyme disease in endemic regions.

Question 5

Under which circumstances should a community health nurse implement droplet precautions?

Accepted Answer

For patients with influenza, meningococcal meningitis, or pertussis

Answer

Droplet precautions are used for infections spread by large respiratory droplets (>5 microns), including influenza, bacterial meningitis, and pertussis.

NCAS - Nursing Community Assessment Service Practice Test

NCAS - Nursing Community Assessment Service Practice Test

NCAS Infection Control and Prevention 2