Influenza A viruses isolated from migrating ducks in Oklahoma.
Nine type A influenza viruses were isolated from migrating and wintering ducks in Oklahoma in 1976-77. Antigenic classification of the viruses isolated revealed three different subtypes: Hav1 Nav2, Hws N1, and Hav6 N2. Transmission of influenza viruses from the wild ducks to sentinel birds (McGraw mallards) on the same lakes was not detected.
D000818:Animals; D000956:Antigens, Viral / Q000032:analysis; D004372:Ducks / Q000382:microbiology*; D009980:Influenza A virus / Q000276:immunology / Q000302:isolation & purification*; D009825:Oklahoma
D000956:Antigens, Viral