聚类分析对中国肾综合征出血热疫区分型的探讨

目的：用聚类分析探讨中国肾综合征出血热(HFRS)疫区分型情况。方法：对1995～1999年数据完整的36个监测点的发病率资料，按各年度及计算5年月平均发病率后分别进行聚类分析。结果：36个HFRS监测点1995～1999年资料综合发病率聚成3类时，与1980～1992年原分型结果相比：分型相同的有24个，占66．7％。在现分型中，除了7个监测点未给出明确的疫区分型外，其余29个监测点1999年报道分型的结论与1999年采用聚类分析进行的疫区分型，一致的有23个，占79．3％。结论：春季和夏季HFRS发病有所增加，而秋冬季则相对下降；聚类分析可以作为疫区分型的辅助方法。

Typing of hemorrhagic fever with renal syndrome by cluster analysis

Objective To make an inquiry into method of typing of hemorrhagic fever with renal syndrome (HFRS). Method Average monthly rates were calculated on the basis of data from 1995 to 1999, then cluster analysis was carried out to type out endemic areas. Results Compared with the results of 36 surveillance spots from 1980 to 1992,twenty four surveillance spots had the same results ( 66.7 %). Twenty three surveillance spots had the same results with the original data in 1999 ( 82.1 %). Conclusion HFRS incidences increased in spring or in summer, but decreased in autumn or in winter. Cluster analysis seemed to be a supplementary method in distinguishing the epidemic types for HFRS.