Much of the message's information was misleading about a real variant of the virus that causes COVID-19.

A global study has found strong evidence that a new form of the coronavirus has spread from Europe to the US. The new mutation makes the virus more likely to infect people but does not seem to make ...

SAN FRANCISCO (KGO) -- Preliminary data out of South Africa is giving the world insight into how strong omicron really is. The South African Medical Research Council just reported this variant may ...

DURHAM, N.C. -- Researchers at Duke University's School of Medicine helped discover a new strain of coronavirus. Dr. David Montefiori, a professor of surgery who also serves as Director of the ...

New research suggests that Pfizer’s COVID-19 vaccine can protect against a mutation found in two highly contagious variants of the coronavirus that erupted in Britain and South Africa. Those variants ...

Have you ever wondered why you have to get a flu shot every year, but some vaccines are one-and-done? It all has to do with how and how fast viruses evolve - and that depends on mutation rates.

A ferocious surge of flu cases is linked in part to a variant that has not been dominant in the past few years — resulting in ...

Flu is rising rapidly across the U.S., driven by a new variant of the virus. The Centers for Disease Control and Prevention ...