Following the Centers for Disease Control and Prevention's warning last week that as many as 25 percent of people infected with the novel coronavirus (COVID-19) may be asymptomatic, meaning they never ...

Laboratory tests of surgical and N95 masks by researchers at the University of California, Davis, show that they do cut down the amount of aerosolized particles emitted during breathing, talking and ...

DETROIT – Researchers are learning more about what makes a cloth mask more effective against the spread of coronavirus (COVID-19). A new study in the medical journal, Thorax, indicates that layers are ...

The CDC is now recommending that you cover your face when you're outside. President Donald Trump is calling it voluntary. Now, more people are trying to make their own mask from home. Infectious ...

Confronting new, more transmissible variants of the coronavirus and a winter spike in infections, a number of European countries are beginning to make medical-grade face masks mandatory in the hope ...