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在鼠疫自然疫源地中,鼠疫菌保存机制还不十分清楚。这种现象的实质,在理论上的认识比方法改进的研究要发展得快。调查疫源地的动物流行病学现行方法,可较容易的查明急性鼠疫动物流行,即在流行期可检出鼠疫菌。另外在动物流行停息时,鼠疫菌转入储存期(动物流行间歇期),即在自然界中迁延型发病的动物比例不断增加时,检出鼠疫菌的可能性降低。这些发现
In the plague natural foci, the storage mechanism of plague bacteria is not yet clear. The essence of this phenomenon, the theoretical understanding of the method to improve the research to develop faster. The current epidemiological method of animal epidemic investigation in the foci can be used to easily identify the epidemic of acute plague animals, that is, Yersinia pestis can be detected during the epidemic period. In addition, when the animal epidemic stops, Yersinia pestis will be less likely to be detected when the epidemic period of Yersinia pestis transits (intermittent animal epidemic period), that is, when the proportion of animals with protracted pathogenesis increases in nature. These discoveries