Presence of avian pneumovirus subtypes A and B in Japan.
Four avian pneumovirus (APV) isolates from chickens clinically diagnosed with swollen head syndrome were genetically characterized as to the subtypes of the virus in Japan. The results of reverse transcriptase-polymerase chain reactions based on subtype-specific primers and direct sequence analysis of G genes indicated subtypes A and B but not C or D of APV were present in Japan. Several routes or sources are conceivable for APV to invade into Japan.
Mase
Masaji
M
Department of Infectious Diseases, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan.
Yamaguchi
Shigeo
S
Tsukamoto
Kenji
K
Imada
Tadao
T
Imai
Kunitoshi
K
Nakamura
Kikuyasu
K
D000818:Animals; D002645:Chickens / Q000821:virology*; D005814:Genes, Viral / Q000235:genetics; D007564:Japan / Q000453:epidemiology; D010802:Phylogeny; D018111:Pneumovirus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D018186:Pneumovirus Infections / Q000453:epidemiology* / Q000662:veterinary* / Q000821:virology; D011201:Poultry Diseases / Q000453:epidemiology* / Q000821:virology*