1. The endemicity degree of echinococcosis differs with regions and is influenced by various factors.
棘球蚴病的流行具有地方性，但各地区的流行程度差异较大。
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2. Objective to study epidemiologic features and degree of endemicity of Schistosomiasis Japonica in water net region.
目的了解水网地区日本血吸虫病流行程度及流行特征。
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3. The study on the validity, reliability and control effect of the screening method of regarding water contact as chemotherapy indicator was carried out in schistosomiasis medium endemicity.
4. The study on the validity, reliability and control effect of the screening method of regarding water contact as chemotherapy indicator was carried out in schistosomiasis medium endemicity.
