河口县海拔37～130m，属热带、亚热带气候，一年四季均适合按蚊生长，按蚊种类达17种之多，疟疾发病经常不断。为了搞好防治工作，我们对驻河口部队进行了疟疾流行病学调查。1对象和方法1．1对象驻河口某边防部队全体干部战士，绝大多数来自低疟区，男性，平均年龄21．2岁，驻 Hekou County, an elevation of 37 ~ 130m, is a tropical and subtropical climate, all year round suitable for Anopheles growth, mosquito species amounted to as many as 17, the incidence of malaria often. In order to do a good job in prevention and treatment, we carried out a malaria epidemiological investigation in the estuarine unit. 1 objects and methods 1.1 objects in the estuary of a border army cadres and soldiers, the vast majority from low malaria, male, average age 21.2 years old, resident