[Circulation of the influenza A virus of H13 serosubtype among seagulls in the Northern Caspian (1979-1985)].
The results of seven-year ecologo-virological studies (1979-1985) of Laridae colonies on the island Zhemchuzhnyi, northern Kaspian Sea, showed annual isolation of influenza A viruses. Altogether, 95 hemagglutinating agent have been isolated. Strains with 4 different combinations of surface antigens were identified: H5N2, H13N2, H13N3, H13N6. The possibility of transovarial transmission is confirmed by the fact of isolation of an influenza virus strain A/black-headed herring gull/Astrakhan/458/85 (H13N6) from a nestling having no contacts with the environment. Simultaneous circulation of influenza A viruses (in 1983--H13N2 and H13N6, in 1985.--H13N3 and H13N6) and the presence in the virion of neuraminidase of human influenza virus (N2) allow to consider the isolates to be natural recombinants.
Iamnikova
S S
SS
Kovtun
T O
TO
Dmitriev
G A
GA
Aristova
V A
VA
Krivonosov
G A
GA
Rusanov
G M
GM
Konechnyĭ
A G
AG
L'vov
D K
DK
D000818:Animals; D001717:Birds / Q000382:microbiology*; D006389:Hemagglutinins, Viral / Q000302:isolation & purification; D009980:Influenza A virus / Q000302:isolation & purification*; D005585:Influenza in Birds / Q000453:epidemiology*; D012426:Russia
D006389:Hemagglutinins, Viral
Tsirkuliatsiia virusa grippa A seropodtipa H13 sredi chaĭkovykh ptits severnogo kaspiia (1979-1985 gg.).