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凯里县位于贵州省中部,全县为山区,面积1,400多平方公里,人口31万,苗、(亻革)、侗等少数民族占60%。1957年以来为贵州省疟疾防治现场应用研究的试点县。据中国医学科学院寄生虫病研究所和本所调查,1957年疟疾发病率为944/万,脾肿率为2,870/万,原虫率为1,120/万,是一个以间日疟为主,同时存在恶性疟和三日疟的高疟区;传疟媒介有中华按蚊和微小按蚊。
Kaili County is located in the central part of Guizhou Province. The county is a mountainous area with an area of more than 1,400 square kilometers and a population of 310,000. 60% of the ethnic minorities such as Miao, Liji and Dong are ethnic minorities. Since 1957 pilot sites for malaria prevention and treatment in Guizhou Province have been studied. According to the Institute of Parasitic Diseases, Chinese Academy of Medical Sciences and the Institute survey, the incidence of malaria in 1957 was 944 / million, the splenomegaly rate was 2,870 / million, the parasite rate was 1,120 / million, is a vivax malaria-based, exist Plasmodium falciparum and Plasmodium falciparum; malaria vectors transmitted Anopheles sinensis and Anopheles minimus.