On August 2, 1961, a call was received from a client who reported that his 140 lb. market hogs were sick. Upon arrival at the client's farm, two dead pigs were found. Several of the rest of the herd of 94 animals were noticeably depressed. Eighty :per cent of the herd, including the two dead pigs, showed signs of cervical abscesses. Upon postmortem examination encapsulated abscesses, containing yellowish creamy exudate, were found within the soft tissues of the ventral cervical region. Other postmortem lesions included a hyperemic intestinal tract and greatly enlarged kidneys (3 times normal size) which seemed to be infiltrated witl1. multiple abscesses. Tissues, exudate, and citrated blood were obtained for laboratory studies by a commercial laboratory.