Influenza A Virus, H2N2 Subtype

**Definition:** A subtype of INFLUENZA A VIRUS comprised of the surface proteins hemagglutinin 2 and neuraminidase 2. The H2N2 subtype was responsible for the Asian flu pandemic of 1957.

**Tree numbers:** - B04.820.480.968.405.400.250

**Synonyms:** - Avian Influenza A(H2N2) Virus - H2N2 - H2N2 Bird Flu Virus - H2N2 Influenza Virus - H2N2 subtype - H2N2 Virus - Influenza A(H2N2) Virus