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本实验以长尾黄鼠体分离的强毒鼠疫菌接种小白鼠,实现了对秃病蚤指名亚种(Nosopsyllus laeviceps laeviceps)的鼠疫感染。其感染率,雌性为95％,雄性为98％;其菌栓率,雌性为32.8％,雄性为2.8％。雌、雄性感染率之间无显著差异(P>0.25),菌栓率则有十分显著的差异(P<0.01)。 本实验表明了天山西段B型鼠疫菌对该蚤种的高度寄生适应能力。从而提示我们,在灰早獭—长尾黄鼠鼠疫疫源地中,长尾黄鼠与砂土鼠分布区可能相连的地段,有实现向砂土鼠分布区扩散鼠疫,乃至形成新的疫源地的可能,应当采取措施,防患于未燃。
In this experiment, mice were inoculated with virulent Yersinia pestis isolated from Long-tailed Chinense and infected with Nosopsyllus laeviceps laeviceps. The infection rate was 95% in females and 98% in males. The rate of sepsis was 32.8% in females and 2.8% in males. There was no significant difference between female and male infection rates (P> 0.25), but there was a significant difference (P <0.01) between the rate of bacterial embolus and infection rate. The experiment showed that the type B Yersinia pestis in the western Tianshan Mountains could highly parasitize the flea species. Therefore, we suggest that in the gray otter - platycladus tetragnei plague foci, the area where the long-tailed squirrel and the gerbil may be connected may spread the plague to the gerbil distribution and even form a new epidemic Source of possible, should take measures to prevent suffering from unburned.