Avian Bird Flu 2025. Bird flu, also called avian influenza, is caused by influenza type a virus infections in bird species. There are different strains of bird flu virus, which have been circulating for a very long time among at least 100 bird species without much harming them.

What do you need today? Between january 2003 and march 28, 2025 there have been 888 human cases of bird flu infection in humans, according to a report by the world health organization.