Antibodies to H5 subtype avian influenza virus and Japanese encephalitis virus in northern pintails (Anas acuta) sampled in Japan.
Blood samples from 105 northern pintails (Anas acuta) captured on Hokkaido, Japan were tested for antibodies to avian influenza virus (AIV), Japanese encephalitis virus (JEV), and West Nile virus (WNV) to assess possible involvement of this species in the spread of economically important and potentially zoonotic pathogens. Antibodies to AIV were detected in 64 of 105 samples (61%). Of the 64 positives, 95% and 81% inhibited agglutination of two different H5 AIV antigens (H5N1 and H5N9), respectively. Antibodies to JEV and WNV were detected in five (5%) and none of the samples, respectively. Results provide evidence for prior exposure of migrating northern pintails to H5 AIV which couldhave implications for viral shedding and disease occurrence. Results also provide evidence for limited involvement of this species in the transmission and spread of flaviviruses during spring migration.
US Geological Survey, Alaska Science Center, 4210 University Drive, Anchorage, Alaska 99508, USA. aramey@usgs.gov
Andrew M
AM
Ramey
Erica
E
Spackman
Jung-Yong
JY
Yeh
Go
G
Fujita
Kan
K
Konishi
Kiyoshi
K
Uchida
John A
JA
Reed
Benjamin R
BR
Wilcox
Justin D
JD
Brown
David E
DE
Stallknecht
D025041:Animal Migration; D000818:Animals; D000914:Antibodies, Viral / Q000097:blood*; D004372:Ducks; D004664:Encephalitis Virus, Japanese / Q000276:immunology*; D004672:Encephalitis, Japanese / Q000097:blood / Q000276:immunology / Q000662:veterinary* / Q000821:virology; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary; D019267:Hemagglutinin Glycoproteins, Influenza Virus / Q000235:genetics / Q000276:immunology*; D009980:Influenza A virus / Q000235:genetics / Q000276:immunology*; D005585:Influenza in Birds / Q000097:blood / Q000453:epidemiology / Q000276:immunology / Q000821:virology*; D007564:Japan / Q000453:epidemiology; D012621:Seasons
D000914:Antibodies, Viral; D019267:Hemagglutinin Glycoproteins, Influenza Virus; C109963:hemagglutinin, avian influenza A virus