Cases of the omicron variant may be slowing down, but the variant still has a firm hold on America. Mask selection continues to be a hot topic, especially since the 400 million free N95 masks promised by the Biden administration have already begun to be distributed at pharmacies and community health centers across the country.

Are N95s right for everyone? What is the difference between an N95 and a KN95 mask? Are surgical masks and cloth masks worth wearing at all? Is double masking really effective?  Edward Jones-Lopez, MD, MS, an infectious disease specialist with Keck Medicine of USC and an expert on the transmission of airborne pathogens, answers these and other pressing questions.

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