This latest outbreak is part of a broader epizootic that has swept across the United States, affecting not only poultry but ...

Bird flu is now believed to be widespread in Massachusetts and is likely present even in places where there has not been a ...

A bird in hand may be worth two in the bush. But two bird flu strains out of hand would certainly be worse than one. The U.S. hasn’t been able to control the spread of the H5N1 bird flu.

A spike in flu cases in NY offered clues on when the season may end, underscoring it's not too late to get a flu shot.

The California duck farm's strain of H5N9 is different from those earlier cases because this time it is closely related to a ...