Epidemiological study on the habu bites in the amami and Okinawa islands: Sawai, Y.,1Kawamura, Y., Fukuyama, T., Chinzei, H.,2Okonogi, T.,3Makino, M.,1Hokama, Z. and Yamakawa, M.,4 (1) The Japan Snake Institute, Nittagun, Gunma Prefecture 379-23, Japan, (2) Division of Tropical Epidemiology, University of Tokyo, P.O. Takanawa, Tokyo 108, Japan, (3) The Sankyo Central Laboratory, Shinagawa-ku, Tokyo 140, Japan and (4) Okinawa Prefectural Public Health Laboratory, Naha, Okinawa Prefecture 901, Japan