What is the highest level of personal protective equipment (PPE)?

The highest level of personal protective equipment (PPE) listed in this question is the N-95 respirator. N-95 respirators are designed to achieve a very close facial fit and are efficient in filtering out at least 95% of airborne particles, including large respiratory droplets that may contain viruses or other pathogens.

This level of protection is crucial in healthcare settings, especially during situations where exposure to infectious agents is a significant concern. The N-95 provides a higher standard of filtration compared to regular masks, which primarily serve to prevent droplet transmission but do not fit as tightly or filter as effectively.

The other choices, while important components of PPE, do not provide the same level of respiratory protection as the N-95. A regular mask may block larger droplets but does not filter out smaller particles effectively, while a face shield primarily protects the face and eyes from splashes and droplets but does not prevent inhalation of airborne pathogens. Similarly, gowns are essential for protecting skin and clothing from contamination but do not address airborne exposure. Thus, the N-95 is recognized as the highest level of personal protective equipment among the options provided.