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本文应用集中度对上高县１９７１～１９９４年麻疹、百日咳、白喉、脊灰四病按开展预防接种以前及接种早期、后期各８年的发病季节性分布进行了统计分析，为今后的预防工作提供依据。材料与方法１疫情及计免资料来源：本站资料室，人口资料由县统计局提供。２计算方法：月...
In this paper, the seasonal distribution of incidence of measles, pertussis, diphtheria and poliomyelitis in Shanggao County from 1971 to 1994 before vaccination and in the early and late eight years of vaccination were statistically analyzed for future preventive work Provide evidence. Materials and Methods 1 Epidemic and toll-free sources Source: The reference room, population information provided by the Bureau of Statistics. 2 calculation method: month ...