SAN FRANCISCO (KGO) -- Omicron continues to break previous daily highs for case rates in California due to its high likelihood of transmission. But why? In California, we are all too familiar with the ...

Throughout the U.S., many have noticed it's pretty hard right now to get your hands on those over-the-counter rapid COVID tests. But the Biden administration is hoping to offer some relief. Today, it ...

As soon as South Africa announced the spread of a new and troubling variant last week, scientists went to work. By the time the World Health Organization had named the new lineage Omicron, multiple ...

Moncef Slaoui, the former head of the Trump administration's Operation Warp Speed, says he's "cautiously optimistic" about how well existing vaccines will hold up against omicron, the latest ...

The pandemic has brought many tricky terms and ideas from epidemiology into everyone’s lives. Two particularly complicated concepts are vaccine efficacy and effectiveness. These are not the same thing ...

The COVID-19 vaccines are on track for a big recipe change this fall. Today’s vaccines still contain the original coronavirus strain, the one that started the pandemic — even though that was long ago ...

COVID-19 antibody drugs from Regeneron and Eli Lilly should no longer be used because they don't work against the omicron variant that now accounts for nearly all U.S. infections, U.S. health ...

The FDA has approved a new COVID-19 vaccine formula targeting Omicron variants, but access to the vaccine is limited to those over 65 and individuals with certain preexisting medical conditions.

PHILADELPHIA (WPVI) -- Despite having been administered to millions of Americans with COVID-19, now the Food and Drug Administration has revoked emergency use authorization for two leading antibody ...