Sanitary Survey of a mountainous hamlet in Tohoku disteict:especially on the water quality and the epidemics of typhoid and dysentery

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Hamlet Oda located in Bandai highland of Tohoku district consists of 118 dwellings and 750 population. In this community, an epidemic of typhoid and another of dysentery broke out in 1945 and 1949 respectively. Up to that time, most of the inhabitants used to drink the water of a rivulet. Thereafter most of the villagers came to use well water for drinking, although 22% of them still continued to drink the river water. The authors attempted a sanitary survey of this hamlet, especially directed to the relation between the water quality and the past epidemics. The results obtained were summarized as follows: 1. In the wells examined, the water was drinkable except only two cases. 2. The river water, collected from several locations, was invariably unfit for drinking. In every sample, coli-groups were found. 3. Two epidemics in the past, of typhoid (1945) and of dysentery (1949) were presumed to be water-borne for the following reasons. a. Both epidemics were explosive. b. Most of the patients had used the river water for drinking. c. Morbidity rate was distinctly higher in female than in male. d. Fatality rate was 0 in the dysentery epidemic.
日本民族衛生学会の論文