Avian influenza — known informally as avian flu or bird flu — refers to "influenza caused by viruses adapted to birds." The type with the greatest risk is highly Subtypes · H5N1 · H7N9 · Global impact. Should you be concerned about a particularly bad strain of bird flu - H5N1? WebMD went to public health experts to get answers to your. Avian flu is a strain of flu that infects birds. Avian flu can be passed from birds to humans, and in very rare cases, between people. Avian flu found in backyard flock in Welsh village. Human infections were first reported in in Hong Kong. Human infections with avian and zoonotic influenza viruses have been reported. There is currently no vaccine available to the public. February Learn how and when to remove this template message. Most of the affected turkeys have been larger male toms rather than the smaller hens usually served at the annual holiday dinner. Avian influenza — known informally as avian flu or bird flu — refers to " influenza caused by viruses adapted to birds. Your email Your name Sign me up for Healthline's Newsletter NSCAI recommendations also would disrupt longstanding livestock production practices as gates impede sales by restricting assessment of birds by appearance and offend customers by limiting outside human contact. Influenza A viruses infect humans and many different animals. Depending on the origin host, influenza A viruses can be classified as avian influenza, swine influenza, or other types of animal influenza viruses.