[in Japanese]

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An epizootiological survey was conducted on multilocular echinococcosis among animals in eastern districts of Hokkaido, Japan, during a period from March, 1966, to March, 1968.
The presence of adult organisms of Echinococcus multilocularis was proved in 18 dogs (2.8%) of 641 collected from four districts, Nemuro, Bekkai, betsu, and Shibetcha. The tapeworm was confirmed in 17 (23.9%) of 71 foxes, Vulpes vulpes schrencki, collected from three districts, Nemuro, Bekkai, and Nakashibetsu. Echinococcus larvae were found from only one (0.6%) vole, Clethrionomys rutilus mikado, of 156 various voles in the Nemuro district.
The infection rate was higher in foxes than in dogs. It is considered, however, that the dog plays a more important role than the fox in the infection of human beings.

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Commercial foods labeled as “instant” are mostly dry, dehydrated ones. Salmonella food poisoning frequently occurred to those was had taken foods containing compound fat and processed with oil or vinegar, and less frequently to those who had ingested foods containing carbohydrate of vegetable origin and aatiscptic and processed with oil.
Staphylococcus food poisoning was caused frequently by foods consisting of protein of vegetable origin, or by foods salted, sugared, heated, dried, and dehydrated.
Food poisoning due to Vibrio parahaemolyticus was induced frequently by foods containing compound carbohydrate of vegetable origin, processed with salt or enzyme, and packed with film, and by foods composed of carbohydrate of vegetable origin and vinegared.
Botulism was produced almost always by ingestion of vinegared rice called izushi.
The major family of the bacterial flora found in food frequently causing food poisoning was Pseudomonadaceae for vinegared food, Bacillaceae for oil-processed food, and Lactobacillaceae for food sugared, containing antiseptic, or film-packed.

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A bovine disease of unknown etiology broke out in six prefectures of Japan, Fukuoka, Hiroshima, Nagasaki, Saga, Shimane, and Yamaguchi, in October and November, 1966. Its main symptoms consisted of transient high fever (40.0 to 42.0°C), polypnea, anorexia, loss of vigor, lacrimation, salivation, arthralgia, and tremor of muscles. About 7, 000 cattle were affected with this disease.
Strains Nagasaki and Yamaguchi were developed from defibrinated blood harvested from some affected cattle at the febrile stage. They were successfully subjected to serial passages in cattle. From the results of an infection prevention experiment with cattle, they were identified as strains of bovine epizootic fever virus.
A survey of antibodies against known viruses was conducted on acute-stage and convalescent sera collected from naturally infected cattle and pre- and post-inoculation sera from experimentally infected cattle. As a result, a significant increase in antibody titer was shown by all the sera tested against strain YHK of bovine epizootic fever virus (BHK 21-W2 cell-passaged virus), but not by any of the sera against bovine influenza Kaeishi virus, bovine diarrhea virus, bovine infections rhinotracheitis virus, the Fukuroi type of bovine adenovirus, or type 3 of parainfluenza virus. In conclusion, it was presumed that bovine epizootic fever virus might have played a principal role in the present outbreaks in Japan.

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