Autopsy was conducted on 62 cats collected in Tokyo. Adults of Dirofilaria immitis, morphologically identified as such, were detected from 4 cats (6.4%). They had been harbored in the right ventricle. All the 4 cats were involved in single parasitization. Of them, two were infected with mature and the other two with immature worms. Besides, larvae of D. immitis were detected from one (1.3%) of 75 cats surveyed in Tokyo. In that cat, an adult female worm was found in the right ventricle. No other filarial species were detected from any cat examined. The rate of D. immitis infection was much lower in cats (6.4%) than in dogs (59.1%) in Tokyo.
Vibrio parahaemolyticus was isolated from cultivated oysters (97 strains), the fish hamachi (43 strains), and miscellaneous fishes (171 strains), including mackerel and horse-macherel. It was examined for sensitivity to 6 antibiotics and 7 sulfa drugs by the Showa disc method. More than 55.8% of the strains of each group showed sensitivity-to oleandomycin. Sensitivity (+++) was exhibited by no strains of fish origin. Then 0-5.3% of the strains of each group were sensitive to gentamycin. To chloramphenicol were sensitive (+++) 39.2% of the strains of oyster origin and 45.6% of the strains of miscellaneous fish origin. Sensitivityto sulfa drugs was manifested by 100%, 94.9%, and 88.5% of the strains of hamachi, miscellaneous fish, and oyster origin, respectively.
In 1963, tuberculosis was first found among Japanese indigenous cattle in Sado Island, Niigata Prefecture. Since then 99 animals have been sacrificed because of positive tuberculin tests. Of then, fortysix were examined by autopsy and histopathological observation. Tuberculous lesions were present in the tracheal and pulmonary lymph node (LN)(33 cases), mediastinal LN (32 cases), lung (24 cases), cranial mesenteric, pharyngeal, and laryngeal LN (24 cases), hepatic LN (11 cases), cervical LN (8 cases), mandibular LN (6 cases), parotid and inguinal LN (5 cases), liver (7 cases), spleen (6 cases), and kidney (2 cases). Tubercles of pearl disease were prevalent in 3 cases. When classified by severity based on the spread and degree of tuberculous lesions, the 46 cases consisted of 10 severe, 20 moderate, and 16 mild cases. On the other hand, they were divided into 5 general, 15 pulmonary, 23 lymphatic, and 3 serosal cases on the basis of distribution of lesions. There was no definite relationship between the appearance of tuberculous lesions and the reaction to tuberculin.