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1984年6～10月在淮滨县18个乡开展了发热病人血检工作,结果在11个乡发现恶性疟,这些乡分布在淮河两岸,发病季节高峰在9月;居民带出率10月比6月高3～18倍,婴儿感染率为3.5%。证明1984年该地属暴发流行。通过调查,嗜人按蚊的地理分布及在人帐内的组成比与恶性疟的分布及发病率密切相关。结合其生态特征,证明嗜人按蚊是当地恶性疟的主要媒介。
June to October 1984 in Huaibei County, 18 townships to carry out blood tests of patients with fever, the results found in 11 township of falciparum malaria, these townships located in the banks of the Huaihe River, the peak season onset in September; residents out of 10 months 3 to 18 times higher than in June, the infant infection rate was 3.5%. It proved that the outbreak was endemic in 1984. Through investigation, the geographical distribution of Anopheles anthropophagus and the composition ratio in human accounts are closely related to the distribution and incidence of P. falciparum. Combined with its ecological characteristics, it is proved that Anopheles anthropophagus is the main medium of falciparum malaria in the area.