河北省康保牧场长爪沙鼠疫源地调查报告

1981～1986年连续6年对河北省康保牧场疫源地进行调查。发现啮齿动物18种,长爪沙土鼠(Meriones unguiculatus)为优势种,具有分布广,有较强的连续性等特点。平均公顷密度为0.16。搜集蚤32种,秃病蚤蒙冀亚种(Nospsyllus laeviceps kuzenkovi)和二齿新蚤(Neopsylla bidentatiformis)为优势种。用细菌学检验方法共检验啮齿动物和食肉动物5781只,蚤80组1123只,均未分离出鼠疫菌。用被动血球凝集试验、放射免疫沉淀试验和酶联免疫吸附试验检查啮齿动物和食肉动物血清1169份,仅有一份沙狐血清为阳性。证实疫源地内仍有鼠疫动物病流行。

AN INVESTIGATION ON THE NATURAL FOCI OF PLAGUE OF MERIONES UNGUICULATUS ON KANGBAO PASTURE, HEBEI

During the years 1981-1986 uninterrupted investigations were conducted on natural plague foci within Kangbao Pasture,Hebei. It was discovered that in the areas investigated there existed 18 species of rodents of which Meriories ungui-culatus was the dominant one.It possessed a continuous wide distribution with a density of 0.16 per hectare. Thirty-two species of fleas were collected, of which the 2 varieties of Nosopsyllus laeviceps kuzenkovi and Neopsylla biden-tatiformis were dominant and at the sametime they were the main plague bea-rers. A total of 5781 rodents and carnivores as well as 1123 fleas were examinedby bacteriological method but no plague bacteria were isolated. Examination of 1169 sera from the rodents and carnivores was done by passive hemagglutination test, radioimmunoprecipitation assay and ELISA, only 1 serum from Vulpes corsal showed positive reaction, which suggested that plague epizootic still existed within this plague focal area.