Both incidence and prevalence counts are important for the control of malaria and tuberculosis. Prevalence counts are important for planning services for the treatment of disease.
在对疟疾和肺结核的控制中，发病率和流行程度都很重要。流行程度在制定疾病服务计划中的地位更加重要。
The prevalence rate of smear-positive tuberculosis was 145 per 100 000 (95% confidence interval: 110–180) assuming no tuberculosis in persons aged< 15 years.
如果假设不满15岁的人群中无人罹患结核病，那么痰涂片呈阳性的结核病的患病率为每10万人中有145人（95%的置信区间：110-180）。
However, in recent years, the spread of AIDS in Africa so that the prevalence of tuberculosis accelerated greatly exceeded the rate of promotion of DOTS treatment.
然而近几年来，非洲艾滋病的蔓延使肺结核的流行速度加快，大大超过了DOTS治疗的推广速度。
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