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 ...

A rare but serious clotting disorder linked to certain COVID-19 vaccines and natural adenovirus infections has puzzled scientists for years.

(CNN) — The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K that’s behind early surges in the United Kingdom, Canada and Japan.

SAN FRANCISCO -- A case of the coronavirus variant was detected in Southern California Wednesday, while a second suspected case has been identified in Colorado. According to officials, the COVID-19 ...

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.

LONDON (Reuters) - British scientists are trying to establish whether the rapid spread in southern England of a new variant of the virus that causes COVID-19 is linked to key mutations they have ...

A mutated strain of influenza A, H3N2 subclade K, is surging worldwide, sparking concern about a severe flu season in the U.S. Here's what to symptoms to look out for.