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卫生部生物制品标准化委员会于1992年4月,在北京召开了《中国生物制品规程》一部修订会议。与会专家讨论和修订了结核菌素纯蛋白衍生物(PPD)规程。原规程规定50IU/ml纯蛋白衍生物(PPD)系“专供BCG接种对象选择及接种后质量监测用”,现改为“供卡介苗接种对象选择、卡介苗接种后质量监测及临床诊断用”。根据该修订
In April 1992, the Commission for Biological Products Standardization of the Ministry of Health held a revision meeting of the “China Biological Products Regulations” in Beijing. Attendees discussed and revised the tuberculin pure protein derivative (PPD) protocol. The original regulation stipulates that 50IU / ml pure protein derivative (PPD) is “exclusively used for BCG vaccination target selection and post-vaccination quality monitoring”, and is instead replaced by “Target Selection for BCG Vaccination, Quality Monitoring and Clinical Diagnosis after BCG Vaccination”. According to the amendment