Read full article: Here’s what we know about the omicron variant of COVID-19 so far A COVID-19 virus model. Read full article: This may be the last PDF app you ever need There's a new type of smart ...

Wearing a mask is one way to reduce the spread of COVID-19. There are many types, including surgical masks, cloth masks, and respirators. SARS-CoV-2, the virus that causes COVID-19, usually transmits ...

In a recent study published in The American Journal of Medicine, researchers assessed 3D printed masks as an alternative to N95 respirators. Study: Face Off: 3D Printed Masks as a Cost-Effective and ...

The Centers for Disease Control and Prevention has updated its mask guidance to note that N95 and KN95 masks offer higher levels of protection against COVID-19 than cloth masks, although it stopped ...