H5 Bird Flu: Current Situation | Bird Flu | CDC
Jan 9, 2026 · CDC provides an update on recent developments in the multistate outbreak of avian influenza A (H5N1) The current outbreak began in late March 2024 with the detection of H5N1 bird …
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 …
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 …
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 …
NIH Officials Assess Threat of H5N1 | NIAID: National ...
Dec 31, 2024 · Since 1996, HPAI H5N1 influenza viruses have circulated in at least 23 countries. In late 2021, HPAI H5N1 spread from Europe to North America causing sporadic infections among wild …