The spread of H5N1 avian influenza in North America has countries beyond the United States on alert. Some governments are buying up vaccine stocks and ramping up precautionary measures in response to ...

H5N1, a type of avian influenza, has led to a bird flu outbreak in humans the U.S. Will it cause a pandemic? Experts explain ...

Testing milk from dairy farms across the United States will help contain the disease’s spread among cattle — which should ...

Study published in Science says a single hemagglutinin mutation, similar to one seen in a Canadian case, could make H5N1 ...

The potential mutation would allow the avian influenza virus sweeping through dairy herds to attach to a receptor protein on ...

The H5N1 virus that has been prevalent in these California poultry flocks has also been spreading in commercial dairy cattle ...

The virus has recently expanded in two ways: across regions and across species. Rather than being concentrated in Asia, bird ...

The recent appearance of the H5N1 bird flu in pigs does raise viral reassortment concerns. Here's what we know about this ...

Both flocks affected by this strain of highly pathogenic avian influenza were in Abbotsford, British Columbia.

A teen in British Columbia recently became critically ill after becoming infected with H5N1. H5N1 is a highly pathogenic ...

Efforts to contain the virus are falling short. A teenager in Canada is in critical condition after an unexplained infection.

Human cases in the US are on the rise and the virus is turning up in cows and dairy products. Luckily, we have some vaccines ...