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为确定各种生物学的、社会经济学的、行为方式的和地理的因素与曼氏血吸虫感染率和感染度间的关系,在巴西圣安东尼奥德热苏斯市进行了调查研究。调查对象是调查时正居住在该市的13～15岁儿童。对每个儿童要填写家庭调查表和个人调查表。前者收集有关家庭财产、收入、教育程度、户主职业、厕所和供水设施等情况。后者收集年龄、性别、在家庭中的地位、迁徙史、学校教育、工作、粪检史、曼氏血吸虫感染和抗血吸虫治疗史以及接触疫水的资料。制图标出曼氏血吸
To determine the relationship between various biological, socioeconomic, behavioral and geographic factors and the rate of infection with Schistosoma mansoni and the degree of infection, a study was conducted in Santo Andreós, Brazil. The respondents were children aged 13 to 15 who were living in the city at the time of the survey. For each child, fill in a family questionnaire and a personal questionnaire. The former collects information on family property, income, education, occupations of households, toilets and water supply facilities. The latter collects data on age, sex, status at home, migratory history, schooling, work, history of manure, history of Schistosoma mansoni infection and treatment of schistosomiasis, and exposure to faecal water. Icon system out of Man’s blood suction