High-quality masks called respirators, such as N95s and KN95s, offer strong protection against the spread of COVID-19. But when it comes to comfort and convenience, there is certainly room for ...

Tanya Lewis: Hi, and welcome to COVID, Quickly, a Scientific American podcast series. Josh Fischman: This is your fast-track update on the COVID pandemic. We bring you up to speed on the science ...

After questioning the value of general mask wearing early in the COVID-19 pandemic, the Centers for Disease Control and Prevention (CDC) decided the practice was so demonstrably effective that it ...

One of the largest and most comprehensive studies on the effectiveness of masks found they do almost nothing to reduce the spread of respiratory viruses.