f Ortho- and Paramyxoviruses from Migrating Feral Ducks: Characterization of a New Group of Influenza A Viruses
- Authors: R. G. Webster, M. Morita*, Carroll Pridgen, Bela Tumova†
- First Published Online: 01 August 1976, Journal of General Virology 32: 217-225, doi: 10.1099/0022-1317-32-2-217
- Subject: Articles
- Issue Published:
Ortho- and parainfluenza viruses isolated from the cloacas of migrating feral ducks shot on the Mississippi flyway included three strains of influenza A virus (Hav6 Nav1, Hav6 Nl, Hav7 Neq2) as well as Newcastle disease virus. One influenza virus, A/duck/Memphis/546/74, possessed Hav3 haemagglutinin, but the neuraminidase was not inhibited by any of the known influenza reference antisera. The neuraminidase on this virus was related to the neuraminidases on A/duck/GDR/72 (H2 N?), A/turkey/Ontario/7732/66 (Hav 5 N?), A/duck/Ukraine/1/60 (Hav3 N?) and A/turkey/Wisconsin/68. We therefore propose that the neuraminidase on this group of influenza viruses be designated Nav6.
The A/duck/Memphis/546/74 influenza virus caused an ocular discharge in 1 of 5 ducks and was shed in faeces for 10 days; it was stable in faecal samples for up to 3 days at 20 °C. These results suggest that ecological studies on influenza in avian species should include attempts to isolate virus from faeces. Faecal-oral transmission is an attractive explanation for the spread of influenza virus from feral birds to other animals.
Present address: Akita Perfectural Institute of Public Health, 1–40 Senshu-Meitoku-Cho, Akita, 010, Japan.
Present address: Institute of Epidemiology and Microbiology, Czechoslovak Influenza Centre, Srobarova 48, Prague 10, Czechoslovakia.
© Society for General Microbiology, 1976 | Published by the Microbiology Society
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