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1983～1984年,豫南局部地区恶性疟爆发流行,淮滨县张庄乡是发病较高的地区。该乡1983年疟疾年带虫发病率为5163.2/万,其中恶性疟为3549.4/万,嗜人按蚊在人帐内组成比占80%以上。1985～1986年,该乡实施DDT室内滞留喷洒
From 1983 to 1984, falciparum malaria broke out in some areas in southern Henan Province. Zhangzhuang Township in Huaibei County was a high incidence area. The incidence of malaria in 1983 was 5163.2 / 000, of which 3549.4 / million were Plasmodium falciparum, and Anopheles anthropophagus accounted for more than 80% of the total population. From 1985 to 1986, the township implemented DDT indoor retention spraying