[1] Aichi Prefectural Inst Publ Hlth, Virol Lab, Kita Ku, Nagoya, Aichi 4628576, Japan
[2] Publ Hlth Lab Chiba Prefecture, Virol Lab, Chuoh Ku, Chiba 2608715, Japan
[3] Mitsubishi Kagaku Bioclin Labs Inc, Infect Dis Test Dev Dept, Itabashi Ku, Tokyo 1748555, Japan
[4] Denka Seiken Co Ltd, Viral Diagnost Prod Dept, Niigata 9591695, Japan
[5] Natl Inst Infect Dis, Dept Biochem & Cell Biol, Sinjuku Ku, Tokyo 1628640, Japan
[6] Natl Inst Infect Dis, Dept Virol 2, Sinjuku Ku, Tokyo 1628640, Japan