关键词: 鼠疫, 宿主, 媒介, 种类

Abstract: Objective To study the species composition and the density of the host and vector of plague in historical epidemic areas in Zhejiang province, and provide the scientific evidence for the preventive measures. Methods Captured the rodents and fleas with live trap, and identified the species, then calculated the density of them. Results The rodents which were captured from 2000 to 2006 belonged to 3 orders, 5 families, 12 genera and 19 species. The primary rodents indoor were Rattus norvegicus, Rattus flavipectus and Mus musculus, the primary rodents outdoor were Apodemus agrarius, Suncus murinus,Eothenomys melanogaster and Rattus losea. The rodent density indoor was 4.49%, and the density of outdoor was 4.60%. The fleas on the rodents' body belonged to 4 families, 9 genera and 10 species. Leptopsylla segnis and Monopsyllus anisus were the dominant fleas species in Zhejiang province. The flea infection rate was 7.57% and the total flea index was 0.246. Conclusion The species composition of the host and vector of plague was stable,the density of the rodents and fleas was low. The possibility of ontbreak of plague in Zhejiang province is low. However, the surveilance is necessary.