Spain has reported an outbreak of highly pathogenic H5N1 bird flu on a fattening turkey farm in the southwestern region of Extremadura, the World Organisation for Animal Health (WOAH) said, citing ...

In July, two farms in Spain tested positive for highly pathogenic avian influenza, making them the country’s first flock ...

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

Infectious bird flu virus was found in milk, on equipment, within wastewater and aerosolized in the air on California dairy ...

The complete genome of an early strain of "Spanish flu" - which killed up to 100,000 people between 1918 and 1920 - has been ...

The federal scientists in biohazard suits outside a massive ‒ but virtually deserted ‒ chicken farm don't need to say a word ...

[1/4]Birds fly over the park with an airplane flying in the background, after a confirmed outbreak of bird flu found in two birds in the Zoo, in Brasilia, Brazil June 4, 2025.

Bird flu cases are down this summer, but scientists are “all kind of bracing to see what might happen this fall,” said the director of a U.S. lab that monitors the H5N1 virus in wild birds.

Studies suggest that people who had seasonal flus or vaccinations have low antibody levels against H5N1 bird flu.

H5N1 bird flu is widespread in wild birds worldwide and is causing outbreaks in poultry and U.S. dairy cows with several recent human cases in U.S. dairy and poultry workers, according to the US ...