Airlines, airports and other transportation agencies, including BART and Caltrain. had followed suit in making masks optional.

A top state health official provided little new information on Monday about lifting mask mandates in schools, as public health experts say it might be time to take more steps towards normalcy in schools.

The guidelines outlined by the state's top public health official are looser for booster shots than those set by the federal Centers for Disease Control and Prevention.

With more than 90% of the state’s population in areas now with substantial or high transmission, the California Department of Public Health recommends universal masking in indoor public settings and in schools

Because Covid-19 can be found in stool, even from people without symptoms, researchers are testing wastewater to monitor the virus.

Families and public officials are getting creative this holiday season to keep some of their traditions alive.

During an ongoing crisis, the way public experts, political leaders and other authorities talk to the public carries profound weight.

The announcement followed news about a 60-year-old South Bay resident dying of the disease caused by the novel coronavirus.

Public health officials say this makes for a total of nine confirmed COVID-19 cases countywide and 84,000 around the world.

The California Student Tobacco Survey reached students in grades eight, 10 and 12 at 18 schools in the South Bay.

In true Silicon Valley fashion, Emily Parker launched her leather studio out of her garage before opening a storefront in Menlo Park.

Santa Clara County is trying to equip the public with a lifesaving antidote that reverses the effects of an opioid overdose.

Children in parts of San Jose’s East Side are exposed to dangerous lead levels at a rate higher than the national average, a new study found.

Santa Clara County's Board of Supervisors has nominated Dave Cortese for a second year as board president.

Technology has been blamed for disrupting our sleep, but a group of Silicon Valley companies want to put tech back in the bedroom for the right reasons.

Santa Clara County filed a joint lawsuit with Orange County against the world’s five largest drug manufacturers, accusing the companies of waging a “campaign of deception” directly responsible for a national prescription drug epidemic.