Objective To analyze the epidemic tendency of Microtus fascus plague during 2000-2008 in Sichuan province. Methods To investigate the plague each year according to "overall Plan of the Plague in the Whole Nation" and "Surveillance Program of Sichuan Province Plague". Results There were plague epidemic from 2000 to 2008, with the average density as 312.41/ha. 42.57% of the Microtus fuscus were infected by body Fleas. The Fleas Index was 0.88 and the Index for nest Fleas of Microtas fuscus was 55.89. Six kinds of animals were infected by not only the Microtus fuscus but also herd-dog, sand fox, Tibetan sheep, domestic cats and Cricetulus longicaulatus as well. The positive rate of live Microtus fuscus was 0.32% but 22.99% in the dead Microtus fuscus. The overall positive rate on serological test was 6.70%. There were 4 Sections, 11 species and 19 kinds Fleas identified and carrying 3 kinds of fleas, Callopsylla sparsilis, Amphipsylla tntua tutua and Rhadinopsylla dahurica vicina, with the overall infection rate as 0.054%. Conclusion Plague among Microtus fuscus showed a continuous epidemic in Sichuan province during 2000-2008.%目的 分析四川省2000-2008年青海田鼠鼠疫流行趋势.方法 按照"全国鼠疫总体规划"和"四川省鼠疫监测方案"及实施细则进行调查.结果 2000-2008年每个年度均发生青海田鼠鼠疫流行;鼠平均密度312.41只/ha;青海田鼠体染蚤率42.57%.蚤指数0.88.青海田鼠巢蚤指数55.89;发现染疫动物6种,包括青海田鼠、牧犬、沙狐、家猫、藏系绵羊和长尾仓鼠,其中活体青海田鼠检菌率0.32%,自毙青海田鼠检菌率22.99%;血清学阳检率6.70%.发现蚤类4科11属19种,其中染疫媒介3种,蚤类检菌率0.054%,包括细钩盖蚤、直缘双蚤指名亚种和五侧纤蚤邻近亚种.结论 四川省青海田鼠鼠疫呈连续流行态势.
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