Abstract
Edidemiological surveys based on interviews, fecal examinations, and field surveys on 387 inhabitants and 112 households selected by stratified sampling methcd thoughout Shizuka-Mura, one of model villages for sanitation in Saitama Prefecture, were carried out during last 10 days of August, 1956.
The results obtained by these surveys are as follows :
1. Infected rate obtained by simple smear and AMS methods are rather lower than rural standard (Ascaris 13.70%, Trichocephalus 3.88%, Hook worm 19.64%, Trichostrongylus 0.26% and Clonorchis 3.62%)
2. Members of 64% of households took anthelmintics during past six months. Most of them are Santonin.
3. Low rate of infection is mainly observed in round worm carrier, but hook worm and Clonorchis carriers. This fact seems to be caused by Santonin taken as anthelmintics, so that new control methods or education for hook worm and Clonorchis should be carried out.
4. Epidemiological characteristics of each Helminths, especially of hook worm were studied. The fact that high rates of hook worm carriers were observed among farmer, middle-aged peoples and in certain families, shows positively that this disease has characters of one of occupational diseases occurred amng farmer.
5. The results obtained by field and larvel surveys showed that mulberry fields and fields of egg-plant and / or taro were main infected areas.
6. In two districts, Isaka and Takayanagi, out of six in Shizuka-Mura, the carriers of Clonorchis sinensis were found. The authors investigated on food habits and found that in these two districts, inhabitants comparatively took more raw freshwater fishes.
