title: [Incidence of influenza virus infection in black-headed gulls].
abstract: Two strains of influenza A viruses were isolated in 1978 from tracheal washings of 18 nestlings of black-headed gulls examined for influenza. Three strains of influenza A viruses were isolated in 1979 from 55 gull embryos collected in the same colony, the isolates being similar in their antigenic characteristics with the influenza virus isolated from a gull nestling in 1978. This confirms the possibility of simultaneous circulation of antigenically different variants of influenza A virus among birds in the same colony and transoviral transmission of virus to the offsprings.
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000453:epidemiology* / Q000382:microbiology / Q000635:transmission; D001717:Birds; D002988:Cloaca / Q000382:microbiology; D004625:Embryo, Nonmammalian / Q000382:microbiology; D009980:Influenza A virus / Q000302:isolation & purification; D005585:Influenza in Birds / Q000453:epidemiology* / Q000382:microbiology / Q000635:transmission; D012800:Siberia; D014132:Trachea / Q000382:microbiology
vernacular_title: Infitsirovannost' ozernykh chaek virusami grippa.