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.

摘要： 目的 了解浙江省鼠疫历史疫区宿主动物、媒介的种类构成和密度,为制定预防控制措施提供科学依据。方法 采用笼捕法在浙江省20个鼠疫历史疫区县(市、区)捕鼠和检蚤,进行分类鉴定,并计算捕获率、染蚤率、蚤指数等。结果 浙江省鼠疫历史疫区2000-2006年共捕获鼠形动物3目5科(亚科)12属19种;家栖鼠类主要有褐家鼠、黄胸鼠和小家鼠,野栖鼠类主要有黑线姬鼠、臭、黑腹绒鼠和黄毛鼠;室内外平均捕获率分别为4.49%和4.60%。发现鼠体寄生蚤类4科9属10种,缓慢细蚤和不等单蚤占绝对优势,平均染蚤率和总蚤指数分别为7.57%和0.246。结论 浙江省鼠疫历史疫区的宿主和媒介种类构成保持稳定,密度低,但仍应开展监测工作,及时发现异常信号,采取必要的控制措施,防止鼠疫复燃。

关键词: 鼠疫, 宿主, 媒介, 种类