Influenza A virus subtype H5N1

influenza A virus subtype H5N1 Photo Credit: Cynthia Goldsmith Content Providers: CDC/ Courtesy of Cynthia Goldsmith; Jacqueline Katz; Sherif R. Zaki, Public domain

Subtype of influenza A virus

Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes the disease avian influenza. It is enzootic in many bird populations, and also panzootic. A/H5N1 virus can also infect mammals that have been exposed to infected birds; in these cases, symptoms are frequently severe or fatal.

Also known as...H5N1, A(H5N1), and Influenza A Virus, H5N1 Subtype
Australia Confirms First Mainland H5 Bird Flu Case

Australia Confirms First Mainland H5 Bird Flu Case Australia detected its first mainland case of the highly pathogenic H5 bird flu strain in a migratory bird in Western Australia.