The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another ...

Bird flu was nearly everywhere in the U.S.—in chickens, cows, pet cats and even humans. Cases have gone down, but experts ...

For months, bird flu was seemingly everywhere in the U.S.: news headlines reported the highly pathogenic H5N1 avian influenza ...

H5N1 avian influenza has long been a concerning virus. Since its discovery in 1996 in waterfowl, bird flu has occasionally ...

Human bird flu cases tick up; second Colorado poultry farm reports spread Seven cases have been reported in Colorado this month, bringing the total to 11.

Here's what we know about human bird flu cases in Colorado, what the state health department says about consuming poultry products and more.

U.S. health officials on Friday announced two more bird flu cases among farmworkers at a Colorado poultry farm, bringing the total to six. It's the largest outbreak of human bird flu infections in ...

Five poultry workers in northeast Colorado have fallen ill with bird flu as more human cases sprout across the U.S., state and federal health officials said Friday. The workers were working to ...

Four human cases of the highly pathogenic avian influenza, or H5 bird flu, have been confirmed in Colorado poultry workers, and health officials are presuming another worker also has the virus.

COLORADO, USA — U.S. health officials on Friday announced two more bird flu cases among farmworkers, but they also said a new study in Michigan suggested the virus is not causing silent ...

Want to know how many human bird flu cases there are in Colorado? Colorado Department of Public Health and Environment has a new tracker.

News Nation/World Two more bird flu cases reported in Colorado, but elsewhere a study finds no asymptomatic infections This 2005 electron microscope image shows an avian influenza A H5N1 virion.