Isolation of reovirus type 2 from diarrheal feces of pigs.

Reoviruses designated as OS-320 to OS-324 were isolated from a total of 5 fecal specimens from 3 with diarrhea and 2 apparently healthy pigs aged 3 months. The serotype of these isolates was determined as reovirus type 2 by cross neutralizing tests. Furthermore, the results of hemagglutination test suggested the isolates were different from the other reoviruses. A survey of neutralizing antibody against reoviruses showed type 2 virus was widely prevalent among pigs in Okayama Prefecture. This paper is the first report of the isolation of reovirus type 2 from pigs.