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乐业县属于亚热带地区。1970年出现疟疾严重的流行,年发病率为743.1/万,经过连续八年抗疟,到1978年发病率降为5.8/万。以后出现疟疾逐年回升,到1981年发病率上升到37.0/万。1982年进行传染源的监测,对发热病人采血镜检,全年血检人数为16,053人,年血检率为14.8％,血检村屯覆盖面为95.1％,发现带疟原虫病例347人,现对这些病例进行流行病学分析。
Leye County belongs to the subtropical region. In 1970, a serious epidemic of malaria was reported with an annual incidence of 743.1 million. After eight consecutive years of antimalarial treatment, the incidence dropped to 5.8% by 1978. Since then, malaria has been rising year by year. By 1981, the incidence rose to 37.0 / million. In 1982, the source of infection was monitored and blood samples were collected from patients with fever. The number of blood tests was 16,053 and the annual blood test was 14.8%. The coverage of blood tests was 95.1%. A total of 347 cases of Plasmodium were found. Epidemiological analysis of these cases.