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1985年4～9月于县苏县鼠疫疫源地通过监测发现,该疫源地动物鼠疫仍在广泛流行;但未发生人间鼠疫。黄鼠平均染菌率为1.51％,染菌率高峰为7月,单峰型;旱獭染菌率为0.81％。黄鼠间接血凝试验平均阳性率为13.74％,阳性率高峰在4月,低峰在7月,双峰型;牧犬血凝阳性率为10.25％;检验旱獭血清90份,其它动物10份,结果皆阴性。监测期间共检出鼠疫菌47株,其中检自黄鼠10株,黄鼠体外寄生物36株,旱獭1株。
From April to September 1985, surveillance of the plague foci in Suxian County found that the animal plague in the foci was still prevalent; however, human plague did not occur. The average infection rate was 1.51%. The highest rate of infection was in July and unimodal. The infection rate of marmot was 0.81%. The average positive rate of indirect hemagglutination test was 13.74%. The positive rate peaked in April and the lowest peaked in July. The positive rate of hemagglutination was 10.25% Results were negative. During the monitoring period, 47 strains of Yersinia pestis were detected, of which 10 were collected from the ginseng, 36 from the ectoparasiteus and 1 from the marmot.