Abstract
In September 1987, on a pig breeding farm in Kagoshima Prefecture, 6 newborn piglets died suddenly prior to their eighth postnatal day. Clinical, pathological and microbiological examinations of 3 dead piglets revealed no particular findings nor any responsible bacteria. A viral test, however, detected a virus having a cytopathic effect on ESK cells, in the respective parenchymal organs of 2 dead piglets. In view of its physical, biological and serological properties, the above virus was identified as Getah virus belonging to alphavirus of the Togaviridae. Thus, the animal deaths were thought to be due to postpartal infection with Getah virus, considering that the neutralizing antibody titer to the isolated virus was <2 for all of piglets, their litters and dams immediately before death.
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