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.
A 51 years old farmer was in unconscious state when he was brought into our hospital. Four days before admission he handled “Nissol” and low toxic organophshor “Smithion” about 9 hours at his farm of apples. Three days before he noted nausea, vomiting, headache, dizzines, sweatiness and light fever. In the midnight convulsion of limbs occured. Two days before symptoms became progressively worse. Examinations on admission revealed depression of blood pressure (100-70), incipient rise of body temperature, low blood sugar level (45 mg/dl), concussion of eye-ball and Babinski's sign. Then as an intoxication of Nissol we treated the patient with glucose solution (5 or 50%), acetamide, antibiotics, phenobalbital, cardiac stimulants and atropin. Fourteen hours after admission he recovered consciousness. Low blood sugar level and depression of blood pressure continued while about 7 days. He was out of hospital on the 20 th day.