Study on Medical Geography of Dysentery in Japan

Abstract

Study of the medical geography is done by making clear the relation of the pathogenic complex of human beings, their natural environment and germs. In this case a human being is considered as a general idea which includes individual bodies and society. Distribution of the death and case of dysentery in Japan shows a high rate in the area from Kanto to the north Kyushu districts and a low rate in the various basins in the Central Japan, Hokuriku, Tohoku and Hokkaido districts, according to the average statistics of the years 1930_??_1935 and 1933_??_1944. Contrary to this distribution, in the years 1046_??_1947 shows a high rate-in the rural districts. These distributions are made by the pathogenic complex of the natural terms such as tempeatur-e, water system, flies and others, various other terms such as constitution, Bazillentrager, industry, the density of population and sanitary conditions, and the various terms of the dyscnt ery bacillus, which are all the cause of the disease. The condition of the complex is different in areas and. has a close relation with the chara cteristics of areas. The coefficient of correlation of the case and the po pulation rate of cities is +0.577. The cause that the rate is generally i high in cities is owing to the fact that their social terms have affected the complex very much. The reason that a high rate was shown in rural districts in the years 1946_??_1947 is considered to be on . account of the influence of the war.