Hungary and Italy have both reported an outbreak of the severe H5N1 avian influenza virus in the first such cases in the ...

Seven people fell ill with flu-like symptoms after contact with someone infected with H5N1, raising fears that the virus has ...

Germany reported an outbreak of highly pathogenic H5N1 bird flu on a farm in the eastern region of Saxony near the border ...

"Even sporadic cases of human-to-human transmission indicate a big change in the virus and suggest it is exploring new ...

Hospital workers reported respiratory symptoms after encountering a Missouri patient with H5N1 who had not been exposed to ...

Forty-seven tigers, three lions and a panther have died in zoos in south Vietnam due to the H5N1 bird flu virus, state media ...

The fatalities took place in two zoos in August and September near Ho Chi Minh City, state media has reported, and test ...

The latest developments are highly concerning, as they raise the possibility that the H5N1 virus has evolved the ability to ...

Dozens of tigers have died in zoos in south Vietnam after a bird flu outbreak, according to state media. Three lions and a ...

The World Health Organization says there have been increasing reports of deadly outbreaks among mammals caused by influenza ...

U.S. health officials have run into obstacles in their efforts to determine whether a Missouri person infected with H5N1 bird ...