兰州地区鼠疫自然疫源性调查初报

A PRELIMINARY REPORT ON THE INVESTIGATION OF PLAGUE NATURAL FOCUS IN LANZHOU DISTRICT,GANSU PROVINCE

本文报告了甘肃省兰州地区鼠疫自然疫源性初步调查结果。该地区与已查明的天祝喜马拉雅旱獭疫源地和会宁、平川阿拉善黄鼠疫源地接壤,其自然地理景观、啮齿动物种群构成与分布特征、媒介蚤类组成等与黄鼠疫源地基本相同。主要宿主动物为阿拉善黄鼠,主要媒介为方形黄鼠蚤蒙古亚种和阿巴盖新蚤。未检出鼠疫菌和1HA阳性血清,但RIP检出1:10以上滴度血清5份,其中1份为1:640。对调查结果的综合分析表明,兰州地区存在鼠疫自然疫源性的可能性很大。

This paper reports the priliminary results on the plague focus investigation in Lanzhou district, Gansu Province. The district meets with the known Marmota himalayana plague foci of Tianzhu county and Citellus dauricus alashanicus plague foci of Huining county and Pingchuan district. Its natural landscape,fauna and distribution of rodents and composition of fleas are fundamentally identical with those of Citellus dauricus alashanicus plague foci. The chief reservoir is Citellus dauricus alashanicus and the chief vector is Citellophilus tesquorum mongolicus and Neopsylla abagaitui. No Y. pestis and IHA positive sera were discovered ,but 5 sera≥1: 10 were, found using RIP and of them titer of 1 was 1:640. The results show that there is a possibility of existing plague foci in Lanzhou district.