SAN FRANCISCO -- The Delta variant now accounts for more than 51% of new COVID-19 cases across the country. Los Angeles County public health officials recommend everyone wear masks inside regardless ...

Several COVID-19 variants are acting uniquely enough to qualify as a distinct strain. And you might have heard about one on ...

It was just over six weeks ago that California reopened, the statewide mask mandate was lifted and Governor Gavin Newsom began proudly claiming California is roaring back. But as cases now continue to ...

SAN FRANCISCO (KGO) -- Bay Area doctors and health officials are concerned about the rapid spread of the COVID-19 Delta variant, warning significant outbreaks could trigger a setback for the state.

SAN FRANCISCO -- California health officials are now recommending that residents wear face masks in public indoor settings, regardless of vaccination status, as the COVID-19 Delta variant continues to ...

SAN FRANCISCO (KGO) -- A surge in coronavirus cases has been reported in the Bay Area and across California as well as the country due in part to the emergence of the highly-contagious delta variant.

One thing we know for sure about SARS-CoV-2, the virus that causes COVID-19, is that it keeps changing. Since the start of the pandemic, we have seen several notable variants, including Alpha, Beta, ...