Epidemiology of Ascariasis Yoshiaki Ito / 日本農村医学会雑誌

ABSTRACT

Ascariasis in Japan was epidemiologically studied through clarifying the relationship between the trends of the percentages of positive ova in feces in the whole country, prefecture, city town and village, and social and environmental factors such as economic level, agricultural conditions, and hygienic index. Concerning colonies and households, relationship between ascariasis and several environmental conditions was studied and the following results were obtained.