The virus-fighting startup Singletto has U.S. Department of Defense support, closed a $10 million round, and is selling its ...

The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19, the illness caused by the virus.

Here's how to remove your fabric face masks safely and how to clean them with handwashing or a washing machine ...

SAN FRANCISCO -- As fears rise over China's coronavirus outbreak spreading to the United States, more and more people are looking for ways to protect themselves. One of the most in-demand items are ...

Mask requirements are returning to health care settings across parts of the Bay Area, as health officials brace for the ...

A Danish study released on Wednesday found face masks provide the wearer with only limited protection against COVID-19 infection, but said this should not be used to argue against their widespread use ...

Sonoma County mandates masks in health care facilities from Nov 1 through March 31, 2026, to curb respiratory illnesses.

A California county has implemented a mask mandate and is urging people to get vaccinated, a reminder of the COVID pandemic days.

Masks were critical in fighting Covid-19, but billions of them are now causing an environmental crisis. Studies show ...