It's the largest outbreak of human bird flu infections in U.S. history, and accounts for most of the 11 cases reported to date.

Colorado public health officials reported five new cases of bird flu on Sunday, more than doubling the number of bird-to-human cases of the disease in the United States this year.

AP Medical Writer NEW YORK (AP) — U.S. health officials have announced two more bird flu cases among farmworkers. But here’s some good news: A new study in Michigan suggests the virus is not ...

As Bird Flu Spreads, Two New Cases Diagnosed in California Both patients were dairy workers whose illnesses were mild.

The U.S. Centers for Disease Control and Prevention on Friday confirmed two additional cases of bird flu in Colorado poultry farm workers.

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

State health officials in Colorado have identified three new possible cases of bird flu among poultry workers.

NEW YORK (AP) — 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 ...

NEW YORK – 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 infections in ...