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作者对762名菌苗接种者和1161名随机选择的年龄和性别配对的非接种者进行了比较研究,以评价其有效率和经费节省情况。在菌苗接种组的762人中,接种前1年患肺炎球菌性肺炎的有55人,发病率为72.2/1000人/年;接种后1年患者有17名,发病率为22.4/1000人/年,接种前后发病率的比率为0.31。在对照组的1161人中,在菌茁组接种前1年的相同时间内,有患者7名,
The authors conducted a comparative study of 762 vaccine-vaccinated and 1161 randomly selected age and sex matched non-vaccinated individuals to assess their effectiveness and financial savings. Of the 762 people in the vaccination group, 55 had pneumococcal pneumonia one year prior to vaccination with a prevalence of 72.2 / 1000 persons / year and 17 at 1 year after vaccination with a prevalence of 22.4 / 1000 / Year, the incidence rate before and after inoculation was 0.31. Among the 1161 people in the control group, there were 7 patients in the same period of 1 year prior to inoculation of the bacteria Zhuo group,