H5 Bird Flu: Current Situation | Bird Flu | CDC
Jan 9, 2026 · CDC is using its flu surveillance systems to monitor for H5 bird flu activity in people. On July 7, 2025, CDC streamlined H5 bird flu updates with routine influenza data updates and updated …
Influenza A virus subtype H5N1 - Wikipedia
Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes the disease avian influenza (often referred to as "bird flu"). It is enzootic (maintained in the population) in …
H5N1 Hpai – Resources & Guidance | Animal and Plant Health ...
Dec 19, 2025 · The H5N1 strain of highly pathogenic avian influenza (HPAI) is present in wild birds worldwide and is causing outbreaks in U.S. domestic birds and dairy cattle.
Influenza: A (H5N1) - World Health Organization (WHO)
May 16, 2024 · H5N1 is one of several influenza viruses that causes a highly infectious respiratory disease in birds called avian influenza (or "bird flu"). Infections in mammals, including humans, have …
Bird Flu Viruses Raise Mounting Concerns Among Scientists
Jan 10, 2026 · But that virus, called H5N1, is not the only form of bird flu in circulation. Concerned scientists are keeping a close eye on other types, including a fast-changing flu virus called H9N2.
Avian Influenza (Bird Flu): H5N1, Causes, Symptoms & Treatment
Dec 5, 2024 · A type of influenza A virus, often H5N1 in humans, causes bird flu. The virus can infect your upper respiratory tract and lungs, and sometimes spread to other parts of your body like your …
Wildlife linked to H5N1 spread in Wisconsin dairy farm - dvm360
Jan 6, 2026 · A genetic analysis found that the recent detection of highly pathogenic avian influenza resulted from a wild-life-to-cattle transmission. On December 14, 2025, the USDA’s Animal and Plant …