H5 Bird Flu: Current Situation | Bird Flu | CDC
5 days ago · 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 …
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 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 …
Bird Flu Viruses Raise Mounting Concerns Among Scientists
3 days ago · 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.
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, …
H5N1 Bird Flu: What You Need to Know - Yale Medicine
Jan 7, 2025 · "Avian influenza A (H5N1)," "bird flu," and "H5N1 bird flu" all refer to an illness caused by influenza type A viruses, which primarily affect birds. H5N1 bird flu was first …
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 …
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