Bird Flu Epidemic 2024. A major outbreak of a new strain of bird flu—formally named influenza a virus subtype h5n1—has since killed millions of wild birds and infected poultry, dairy cattle,. International human and animal health experts warn the h5n1 avian influenza is evolving quickly and posing a global health threat as the.

Wild bird mass mortalities in eastern canada associated with the highly pathogenic avian influenza a(h5n1) virus, 2022. Cumulative number of confirmed human cases of avian influenza a(h5n1) reported to who.