Typing of hemorrhagic fever with renal syndrome by cluster analysis / 中华流行病学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To make an inquiry into method of typing of hemorrhagic fever with renal syndrome (HFRS).</p><p><b>METHOD</b>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.</p><p><b>RESULTS</b>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%).</p><p><b>CONCLUSION</b>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.</p>