1990 Volume 43 Issue 9 Pages 646-649
The distribution of antibody against each of Getah, Japanese encephalitis (JE), Apoi, Akabane, Batai, Ibaraki and bovine ephemeral fever (BEF) viruses among pigs in Japan was examined by hemagglutinationinhibition (HI) test or serum neutralization test. During the period of 1979 to 1984, sera from 340 pigs, living through the summer, were collected throughout the country except in the Kyushu district. The positive rate to JE virus was much higher than that of the other viruses and the positive sera to JE virus were detected in every district. A positive rate of 46.2% was found to Getah virus, especially in the Kinki and Chugoku-Shikoku districts, relatively high positive incidences were demonstrated but no positive serum was found in Hokkaido. HI antibodies against Apoi virus detected in this study seemed to be derived from the cross-reactions with antibodies against the JE virus. Although, a low positive rate to each Batai, Akabane and Ibaraki viruses was found, no positive sera to the BEF virus were detected.
