1987 Volume 40 Issue 7 Pages 519-522
In November, 1985, 28 piglets (13 of group A and 15 of group B), approximately 60 days old, were purchased from two breeding farms and introduced into a fattening farm in Nagano Prefecture. After 2-3 days all the biglets of group A showed high fever and nervous symptoms, and 7 died within a few days.
Two severely sick animals were examined. Haemophilus parasuis was purely isolated from main organs. Purultent fibrinous meningitis was observed in them thhistopathologically. The disease in question was diagnosed as H. parsuis infection associated with purulent brinous mentingitis.