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Isolation and characterization of influenza a viruses from wild free-flying ducks in Hokkaido, Japan.
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1979
Year
VaccinationViral EvolutionH2 N2Hong Kong StrainPoultry DiseaseImmunologyEmergent VirusVirologyWild Free-flying DucksInfluenza VaccineSwine VirusFlu VaccinationMedicineAsian Influenza VirusEpidemiologyInfluenza Vaccines
Three influenza A viruses possessing hemagglutinin-Hav7 and neuraminidase-N2 were isolated from 20 wild free-flying ducks in Hokkaido, Japan in autumn, 1977. The neuraminidase antigen of these viruses cross-reacted with the Asian influenza virus (H2 N2) but reacted scarcely with the Hong Kong strain (H3 N2Y in cross neuraminidase-inhibition tests.