Each mask is put through several tests: The first is to see if the mask meets the stringent NIOSH requirements for an N95 mask. If the mask passes that test, researchers take 20 masks from the same ...

1. What changed in the CDC guidelines? The CDC currently recommends that you “wear the most protective mask you can that fits well and that you will wear consistently.” The question, then, is what ...

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, ...

In a matter of weeks, face masks went from being considered unnecessary, and possibly harmful, to mandatory in many places across the U.S. You’re forgiven if you’ve got a bit of whiplash. Currently, ...

In controlled laboratory situations, face masks appear to do a good job of reducing the spread of coronavirus (at least in hamsters) and other respiratory viruses. However, evidence shows mask-wearing ...