Infection control principles · USMLE Step 1

A patient with active measles is admitted. What preventive measure must all healthcare workers entering the room take?

  1. Wear a surgical mask
  2. Wear an N95 respirator
  3. Wash hands before and after entry only
  4. Use face shields
Show answer and explanation

Correct answer: Wear an N95 respirator

Measles spreads via airborne particles. N95 respirators provide the required level of protection.

Difficulty: Medium Question 14 of 20

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