H5 Bird Flu: Current Situation | Bird Flu | CDC
Dec 12, 2025 · 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 Influenza - Animal and Plant Health Inspection Service
Dec 14, 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.
Highly Pathogenic Avian Influenza A(H5N1) Virus Infections in Humans
Dec 31, 2024 · Highly pathogenic avian influenza A (H5N1) viruses have caused widespread infections in dairy cows and poultry in the United States, with sporadic human cases. We describe …
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 …
H5N1: Indian scientists predict how bird flu could spread to humans
Dec 17, 2025 · Scientists have warned H5N1 bird flu could make a dangerous leap to humans, triggering a global health crisis.
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 identified in geese in …
NIH officials assess threat of H5N1
Dec 31, 2024 · Highly pathogenic H5N1 avian influenza A virus (HPAI H5N1) remains a low risk to the general public, and public health experts in the United States believe that available treatments and …
Are We on the Cusp of a Major Bird Flu Outbreak?
Mar 7, 2025 · Until recently, H5N1 strains did not show resistance to Tamiflu. However, a study from Canada documents the emergence of a resistant H5N1 strain in poultry. This strain has a rare …
‘It’s completely out of control’: Scientists warn bird flu could spark ...
3 days ago · When a highly pathogenic strain of bird flu strain of avian influenza (H5N1) began sweeping across wild birds and poultry in 2020, it already looked concerning. Five years on, the picture has …