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, ...
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 ...
As more information about the coronavirus pandemic develops, some of the information in this story may have changed since it was last updated. For the most up-to-date information on COVID-19, please ...
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