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

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

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

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. The absolute ...

The CDC ends its emergency response to H5N1 bird flu after recording 70 human cases and one death nationally, even as experts ...

“Given that some lactating cows’ “steal milk” through self-nursing or mutual-nursing, they speculated that “mouth-to-teat” ...

New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.

According to the CDC, there has been a decline in animal infections and no reports of human cases since February.

The bird flu that’s been making news in the United States is a virus called H5N1. Some flu viruses carried by birds cause only mild infections and are classified as low-pathogenic viruses.

The H5N1 bird flu isn’t new. The CDC says the virus was first identified in Southern China in domestic waterfowl in 1996. In 1997, it spread to 18 people in China and Hong Kong.

With the approach of fall and cooler weather across the United States, officials say the risk posed by the H5N1 bird flu virus could rise — and they’re taking steps to prevent the creation of ...

"This is the first case of H5N1 bird flu in the U.S. that has been linked to exposure to a backyard flock." The confirmation comes weeks after the first case of bird flu was found in a child in ...