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全国铁路“除四害”科研协作组第五次年会于1990年5月28日至31日在广州举行。来自全国铁路系统部分卫生处、科,中心、分局卫生防疫站的领导、专业人员和特邀代表70余人参加会议。中华预防医学会媒介生物学及控制学会主任委员、中国预防医学科学院汪诚信教授为大会发了贺信。三位专家教授应邀到会作了专
The fifth annual meeting of the “four special victims” scientific research cooperation group of the National Railway was held in Guangzhou from May 28 to January 30, 1990. More than 70 leaders, professionals and invited representatives from some health departments, departments, centers and branch health and epidemic prevention stations of the national railway system attended the meeting. Chinese Academy of Preventive Medicine, Institute of Vector Biology and Control chairman, Chinese Academy of Preventive Medicine Professor Wang Chengxin sent a congratulatory message for the conference. Three experts and professors were invited to make a special