Abstract
Almost all the native cattle grazing in the municipal pasture in Suzu, Ishikawa Prefecture, were involved in outbreaks of type III parainfluenza in 1964, 1965, and 1966. Of about 300 cattle infected, fifteen were fatal or condemned.After an incubation period of 10 to 15 days, the animals manifested a fever (39-41°C), coughing, white nasal discharge, anorexia, filthy conjunctivae, and diarrhea. Moist rale was heard in the serious case. Red blood count was 6-15 millions and white blood count 4-10 thousand. Lymphocytosis occurred. Autopsy revealed catarrhal and suppurative broncho-pneumonia, hepatic parenchymatitis, and hemorrhages of various parenchymatous organs. The course of disease lasted more than a month. No dissipation of fever was seen in the serious casefor several months.Gram-negative bacilli of small size were isolated from lesions of pneumonia. Serological examination established a diagnosis of shipping fever to which parainfluenza virus type III had been related. Sulfa drugs and antibiotics were effective to alleviate the symptoms.
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