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 ...

A variant strain of the coronavirus, one that was first discovered in the United Kingdom, is now the dominant strain of the virus circulating throughout the United States, CDC Director Rochelle ...

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 ...

Bird flu has always worried pandemic planners, but a new twist is raising the stakes: scientists are now tracking variants that can keep multiplying even when a human body turns up the heat. A strain ...

After a sharp uptick in flu cases in mid-December 2025, flu activity across the U.S. and Canada remains high.