Missouri's case sparked "global concern" since it was the first time a human who had no known contact with infected animals was confirmed with the virus.

In a case that continues to confound scientists, U.S. health officials said Thursday that they still don't know how a Missouri patient caught the bird flu and that the case may just be a rare anomaly.

SPRINGFIELD, Mo. (KY3) - The Missouri Department of Agriculture is warning poultry farmers to watch out for bird flu. The ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. NEW YORK (AP) — Health officials on Thursday ...

“Typically it’s shed in oral and nasal secretions as well as feces. We see bird-to-bird direct transmission through those ...

H5N1 avian influenza has long been a concerning virus. Since its discovery in 1996 in waterfowl, bird flu has occasionally caused isolated human cases that have quite often been fatal. But last year ...