【摘要】 本疫源地是一块相对独立的自然疫源地,面积约2822km~2。属黄土高原西部丘陵沟壑干草原景观。主要宿主为阿拉善黄鼠,主要媒介为方形黄鼠蚤蒙古亚种,鼠疫菌为黄土高原A、B型。其空间结构可区划为核心区,传出区和波及区。鼠疫动物病的流行具有常年趋势和年度周期以及空间移动性。黄鼠密度低于1只/公顷时,动物体内分离不到鼠疫菌,降到0.5只/公顷时,血清学检查不到特异抗体。预防对策应集中力量在核心区和传出区坚持开展以灭鼠为主的预防措施,控制黄鼠密度,核心区维持在0.4只/公顷以下。更多还原

【Abstract】 This focus is an autonomous focus of plague. It covered an area of 2822 square kilometres. The landscape of this focus is part of the western loess plateau mountainous-hilly steppt. The main reservoir is Citellus dauricus alashanicus while rector is Citellophilus tesquorum mongolicus. The ecotype of Yersinia pestis is the loess plateau Type A and B. We recognized that Y. pestis could not be isolated from the reservoirs when the up limit of the reservoir density was in 1 per hectare and there was no special antiplague antibody was detected when it was in 0.5 per hectare. According to the practice mentioned in this paper, we suggested that we have to strengthen management and leadership breaking nucleus focus and transmited area, regard it as a main measure to kill Citellus dauricus alashanicus for preventing epizootic plague. At the present, the main tasks are maintain the density of the reservoir within 0.4 per hectair in nculeus focus.更多还原