The Centers for Disease Control and Prevention (CDC) has changed its guidelines about masks and respirators a number of times over the past two years and gave its most recent update on January 14, ...

SAN FRANCISCO (KGO) -- The omicron surge has caused the CDC to finally update its mask guidance late last week, indicating a clear preference for the level of protection offered by N95 and KN95 masks.

We thought we were almost done with masks. Then omicron hit, reminding us that even with vaccines, COVID is likely to stick around as an endemic, resurfacing with new variants. And so cyclical masking ...

While there are still many uncertainties surrounding the COVID-19 pandemic, there is one thing that remains indisputable: Masks play an important role in slowing the spread. At the start of the ...

Throughout the COVID-19 pandemic and when maximum protection is needed against air-born infections, the N95 respirator has remained the gold standard of personal protective equipment. However, it is ...

C Raina MacIntyre receives funding from NHMRC, MRFF and has consulted for Ascend Performance Materials, Detmold Group and Cleanspace in the last 5 years. Lisa M Brosseau has no research funding. Trish ...