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自从各类白喉类毒素的预防接种以来，我省大多数地区已控制了白喉的流行。为做好疫情的主动监测，加强白喉的防治，我们选择了不同年龄、不同职业的6组人群进行了白喉带菌调查，现将结果报告如下。1材料与方法1．1材料1．1．1培养基为亚硫酸钾试管斜面培养基。1．1．2毒力试验?
Since the vaccination of various types of diphtheria toxoid, the prevalence of diphtheria has been controlled in most parts of our province. In order to do a good job in the active surveillance of the epidemic and strengthen the prevention and treatment of diphtheria, we selected 6 groups of people of different ages and occupations to carry out a survey on the incidence of diphtheria. The results are reported as follows. 1 Materials and Methods 1.1 Materials 1.1.1 The medium is potassium sulfite tube slant culture medium. 1.1.2 Toxicity test?