关键词: 人类鼠疫, 感染途径, 野鼠疫源地

Abstract: Wild-rodent plague focus in Yunnan was demonstrated by plague bactology in 1975. Then plague in wildrodent has been found for many times. But human plague case has not been found for more than 20 years. The investigated data shows that there exits the infecting channel through wild rodent→wild rodent flea→commensal rodent and not easily forming the infecting channel through commensal rodent→commensal rodent flea→human. It may be the important factors of not infecting plague in human that X. Cheopis being the main vector has not been found in the focus for 40 years and Leptopsylla segnis being superior species in the focus has not a role of vector in the focus.