[Isolation of influenza A H1N2 virus from a returning traveller at Nagoya International Airport].
A reassortant influenza A H1N2 virus was isolated from a returning traveller arriving at Nagoya International Airport, Japan from Indonesia in May, 2002. A Hemagglutination inhibition test revealed that the virus was similar to a vaccine strain of A/NewCaledonia/20/99. A phylogenetic analysis demonstrated that the virus forms a cluster with other influenza A H1N2 viruses isolated in other countries. The reassortment event was theoretically assumed to have occurred between the 1999/2000 and 2000/2001 influenza seasons. Neither A H1N2 nor A H3N1 virus was detected from 256 isolates of AH1 or 177 of AH3 influenza viruses isolated in Aichi Prefecture, Japan between the 1999/2000 and 2001/2002 influenza seasons. This finding suggests the importance of influenza surveillance at an airport quarantine office to detect promptly a novel influenza virus penetrating to Japan.
Department of Microbiology, Aichi Prefectural Institute of Public Health.
Katsuhiko
K
Sato
Takayuki
T
Morishita
Kenji
K
Sakae
D001359:Aviation; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007214:Indonesia; D009980:Influenza A virus / Q000145:classification* / Q000302:isolation & purification*; D007564:Japan; D016865:Reassortant Viruses / Q000302:isolation & purification*; D014195:Travel