Isolation and characterization of influenza A viruses from environmental water at an overwintering site of migratory birds in Japan

Isolation and characterization of influenza A viruses from environmental water at an... The Izumi plain in Kagoshima prefecture, Japan, is an overwintering site of more than 10,000 cranes. The wet paddy areas are artificially created to provide roosting sites for the cranes every winter. Since wild ducks, known to be a natural reservoir of influenza A viruses, also overwinter in this area, the cranes’ roost water likely serves as a source of influenza A virus infection. To assess this potential risk, we collected 126 water samples from the cranes’ roost in the 2012/2013 winter season for virus isolation. We isolated six influenza viruses of three subtypes (H3N8, H4N6, and H4N8) from the water samples collected in the months of November and December. Genetic analysis of our isolates indicated that these viruses were genetically similar to the low-pathogenic avian influenza viruses circulating among Eurasian waterfowl. These findings suggest the possibility of the cranes becoming infected with the avian influenza viruses that are present in their roost water. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Isolation and characterization of influenza A viruses from environmental water at an overwintering site of migratory birds in Japan

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Publisher
Springer Vienna
Copyright
Copyright © 2015 by Springer-Verlag Wien
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-015-2610-0
Publisher site
See Article on Publisher Site

Abstract

The Izumi plain in Kagoshima prefecture, Japan, is an overwintering site of more than 10,000 cranes. The wet paddy areas are artificially created to provide roosting sites for the cranes every winter. Since wild ducks, known to be a natural reservoir of influenza A viruses, also overwinter in this area, the cranes’ roost water likely serves as a source of influenza A virus infection. To assess this potential risk, we collected 126 water samples from the cranes’ roost in the 2012/2013 winter season for virus isolation. We isolated six influenza viruses of three subtypes (H3N8, H4N6, and H4N8) from the water samples collected in the months of November and December. Genetic analysis of our isolates indicated that these viruses were genetically similar to the low-pathogenic avian influenza viruses circulating among Eurasian waterfowl. These findings suggest the possibility of the cranes becoming infected with the avian influenza viruses that are present in their roost water.

Journal

Archives of VirologySpringer Journals

Published: Dec 1, 2015

References

  • Avian influenza virus in water: infectivity is dependent on pH, salinity and temperature
    Brown, JD; Goekjian, G; Poulson, R; Valeika, S; Stallknecht, DE
  • Universal primer set for the full-length amplification of all influenza A viruses
    Hoffmann, E; Stech, J; Guan, Y; Webster, RG; Perez, DR

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