Which item must be worn to prevent inhalation of airborne pathogens?

Which item must be worn to prevent inhalation of airborne pathogens?

• A. Surgical mask
• B. N95 respirator
• C. Gloves
• D. Gown

Answer: (B)

Preventing inhalation of airborne pathogens relies on a device that both filters small particles and forms a close seal to the face. An N95 respirator is designed to achieve a tight facial seal and filter at least 95% of airborne particles as small as 0.3 microns when properly fitted. This combination of filtration efficiency and fit is what makes it effective for inhalation protection against aerosols. In contrast, a surgical mask is loose-fitting and mainly helps protect others from the wearer’s respiratory droplets and provides limited barrier against large droplets, not reliable protection from small airborne particles. Gloves and a gown protect skin and clothing, not inhalation. Therefore, the item best suited to prevent inhalation of airborne pathogens is the respirator, with proper fit testing and seal checks.

Preventing inhalation of airborne pathogens relies on a device that both filters small particles and forms a close seal to the face. An N95 respirator is designed to achieve a tight facial seal and filter at least 95% of airborne particles as small as 0.3 microns when properly fitted. This combination of filtration efficiency and fit is what makes it effective for inhalation protection against aerosols.

In contrast, a surgical mask is loose-fitting and mainly helps protect others from the wearer’s respiratory droplets and provides limited barrier against large droplets, not reliable protection from small airborne particles. Gloves and a gown protect skin and clothing, not inhalation. Therefore, the item best suited to prevent inhalation of airborne pathogens is the respirator, with proper fit testing and seal checks.