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目的了解2013年甘宁黄土高原阿拉善黄鼠鼠疫自然疫源地鼠疫疫情,为今后该疫源地开展鼠疫防控工作提供参考依据。方法按不同生境0.5%比例分层抽样,4月和7月监测主要宿主密度,4—9月5米夹线法监测小型啮齿动物密度,小号板夹监测家屋鼠鼠密度;所获宿主采血做间接血凝试验,宿主乙醚麻醉捡蚤后进行鉴定和细菌学试验。结果该疫源地主要宿主为阿拉善黄鼠(Spermophilus dauricus alashanicus),年平均鼠密度为0.27只/hm2;主要媒介为方形黄鼠蚤蒙古亚种(Citellophilus tesquorum mongolicus),疫源地内宿主体蚤蚤指数为1.00,洞干蚤蚤指数为0.14,窝巢蚤蚤指数为3.33;细菌学和血清学检查结果均为阴性。结论甘宁黄土高原阿拉善黄鼠鼠疫自然疫源地鼠疫疫情处于暂时静息状态,但仍需继续加强监测。
Objective To understand the plague epidemic in the natural foci of Plague of Alashan Yellow Sea in the Gansu Loess Plateau in 2013 and provide a reference for carrying out the prevention and control of plague in the plague in the future. Methods 0.5% of different habitats were stratified sampling, monitoring main host density in April and July, monitoring the density of small rodents with 5-meter sandwich method from April to September, and monitoring the house-house rat density with small plate clip; Do indirect hemagglutination test, the host ether anesthesia flea identification and bacteriological tests. Results The main host of the foci was Spermophilus dauricus alashanicus, with an annual average density of 0.27 per hectare. The main medium was Citellophilus tesquorum mongolicus, The flea index was 1.00, the flea flea flea index was 0.14, and the nest flea flea index was 3.33. Bacteriological and serological tests were negative. Conclusion The plague epidemic in the natural foci of Alashan ants in the Gansu-Ningxia Loess Plateau is in a temporary resting state, but the monitoring still needs to be strengthened.