千葉県下一半農半漁村における鉤虫の疫学的研究 : 第1篇 中学学童における鉤虫の疫学的研究

スポンサーリンク

概要

• 論文の詳細を見る

• All junior high school students at Nishizaki, Tateyama City, a half agricultural and half fishing community, had been examined for Hookworm infestation for three years consecutively. Detection of eggs in the stool was done by a suspension method using saturated salt solution to which magnesium sulfate had been added. The student positive for eggs were given an anthelmintic drug, and the stools from the members of their families were also examined to determine infestation of Hookworm. Epidemiological aspects of Hookworm infestation were also studied. 1. Detection of the eggs and expelling of the worms had been carried out twice every year for three years. The rate of infestation among school children, which was 20.3 per cent in the first year of the program, fell to 3.3 per cent at the end of it. 2. The ratio of the number of children infested with Necator americanus to that of children infested with Ancylostoma duodenale was nearly 1 : 1. Children infested with the two varieties accounted for 56.0 per cent of all the children who produced positive reactions to tests for hookworm eggs. 3. Fresh infection and reinfection of hookworms during a year occurred only in 1.4 and 2.0per cents, respectively, of all the children, though no preventive steps were taken by people concerned. 4. The rate of infestation among members of the families of children who produced positive reactions to tests for hookworm eggs was 58.7 per cent, which is very high as compared with 5.0per cent, a rate of infestation among members of the families of children who produced negative reactions. This suggests that, in working out a plan for protecting school children from hookworm infestation, members of their families should also be included in the program. 5. When tetrachlorethylene was given to children who produced positive results to tests for hook worm eggs, 65.0 per cent of them became negative, while the conversion from positive to negative status occurred in 66.6 per cent when 1-bromo-naphthol-(2) was administered. It was easier to expell N. americanum than A. duodenale. 6. Collateral effects associated with anthelmintic drugs occurred less frequently in winter than in summer. It was the same for both of the drugs.

• 千葉大学の論文
• 1959-03-28

著者

• 吉野 常男

  千葉大学医学部公衆衛生学教室

関連論文

• 千葉県下一半農半漁村における鉤虫の疫学的研究 : 第2篇 部落住民における鉤虫の疫学的研究
• 千葉県下一半農半漁村における鉤虫の疫学的研究 : 第1篇 中学学童における鉤虫の疫学的研究
• 4. 鉤虫の職業別,年令別,及び性別の感染状況についての研究(第1報)(第32回千葉医学会総会演説要旨)

スポンサーリンク