Infection Control · single question
On the NIOSH/CDC hierarchy of controls, where does the use of an N95 respirator mask fall?
Show answer and explanation
Correct answer: D. Personal protective equipment (PPE) — the lowest, last-resort tier
The N95 mask is personal protective equipment (PPE), which sits at the bottom of the hierarchy of controls (Elimination > Substitution > Engineering controls > Administrative controls > PPE) — it's relied upon specifically because the hazard couldn't be eliminated, substituted, or controlled through engineering or administrative means first.
Practice Infection Control questions Infection Control study notes