The masks inside were stamped as if approved by the U.S. National Institute for Occupational Safety and Health — signifying they had been certified by the U.S. government as safe for workers in ...

They noted flaws in the data. For example, many health workers who got COVID in the trials were not infected while wearing their masks at work. But still, they concluded the masks were equivalent.

They noted flaws in the data. For example, many health workers who got COVID in the trials were not infected while wearing their masks at work. But still, they concluded the masks were equivalent.

They noted flaws in the data. For example, many health workers who got Covid in the trials were not infected while wearing their masks at work. But still, they concluded the masks were equivalent.

Health care workers in Arizona report they are re-using, rationing and arguing over protective masks as they try to treat patients while avoiding illness themselves. And the situation won't get ...

A San Diego pediatrician explains why masking remains an important health option, even as some protesters face detention for wearing them.

They noted flaws in the data. For example, many health workers who got COVID in the trials were not infected while wearing their masks at work. But still, they concluded the masks were equivalent.

They noted flaws in the data. For example, many health workers who got covid in the trials were not infected while wearing their masks at work. But still, they concluded the masks were equivalent. “It ...

Nurses, researchers, and workplace safety officers worry new guidelines from the Centers for Disease Control and Prevention might reduce protection against the coronavirus and other airborne ...