然后，依据PPD反应强度及活动性肺结核病人检出情况测算结核感染率及患病率。
Then, calculate tuberculosis infectious rate and morbidity according to PPD reaction intensity and finding of active tuberculosis patients.
然后，依据PPD反应强度及活动性肺结核病人检出情况测算结核感染率及患病率。
Then, calculate tuberculosis infectious rate and morbidity according to PPD reaction intensity and finding of active tuberculosis patients.
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