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我们应用F_(2a)型(南斯拉夫引进之依链株,菌株号51274)和F_(1b)型(武汉军事医科所选育之依链株,菌株号51277)两种单价菌苗对同一地区人群随机(单双号)分为两组,进行了预防效果观察。经均衡性比较,两组年龄分布相仿。试验区痢疾菌群(型)分布大致为F_(1b)占18/70,F_(2a)占7/70,其它占45/70。服苗共5次,成人用量F_(1b)共23丸,活菌1908.6亿;F_(2a)共8丸,活菌1601.6亿。7～12岁为成人剂量之2/3,3～6岁为1/3,观察期间
Two types of monovalent bacterin, F_ (2a) (YRS strain introduced by Yugoslavia, strain No. 51274) and F_ (1b) strain (strain YZ strain selected by Wuhan Military Medical Science, strain No. 51277) Random (single and double) were divided into two groups, the prevention effect was observed. After balanced comparison, the two groups have similar age distribution. The distribution of dysentery flora in the experimental area was roughly F / (1b) accounting for 18/70, F_ (2a) accounting for 7/70 and other accounted for 45/70. A total of 5 doses of clothing, the amount of adult F_ (1b) a total of 23 pills, live bacteria 190.86 billion; F_ (2a) a total of 8 pills, 160.16 billion live bacteria. 7 to 12-year-old adult dose of 2 / 3,3 to 6 years of 1/3 during the observation period