论文部分内容阅读
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。
The source of the disease is a relatively independent natural foci, an area of about 2822km ~ 2. The western part of the Loess Plateau hilly gully landscape. The main host is Alashan yellow rat, the main medium for the square yellow shrimp flea Mongolian species, plague bacteria Loess Plateau A, B type. Its spatial structure can be divided into core area, outgoing area and spreading area. The prevalence of plague animal diseases has perennial and annual cycles and spatial mobility. When the density of squirrel is less than 1 per hectare, no Yersinia pestis can be isolated in the animal body. When the density of the squirrel is lower than 0.5 per hectare, no specific antibody is detected in the serological examination. Precautionary measures should focus on prevention and control in the core areas and out areas adhere to the prevention and control measures to control the density of squirrels, the core area remained below 0.4 / hectare.