High-quality KN95 masks, which offer similar protection ... medical professionals say “respirator,” they specifically mean specialized, fitted face coverings like N95s, KN95s and KF94s.) ...

Keep reading to know what these masks mean in detail. For workers or guards, there are 3 different types of masks with triangle, square, and circle symbols on them. The shape initially seems ...

Wearing face masks may not have lowered the risk of COVID infection after the first Omicron wave, new research has shown. But that does not mean that face masks aren't useful, regardless.