鼠疫耶尔森菌株间遗传关系的数值化分析

Numerical Value Analysis of Genetic Relationship Between Yersinia pestis

目的 :显示不同鼠疫菌株之间的遗传学关系。方法 :将鼠疫菌株间的相似程度数值化 ,进行聚类分析。结果 :检验菌株可以聚为 2个亚种 4个型。结论 :由一次流行而生的型彼此间相似程度较高 ,因各固有疫源地而生的型 ,其间的差异更为显著。

Objective: To determine the genetic relationships between different strains of Yersinia pestis. Method: Transfer the characters between different Y.pestis strains into standardized resemblity values and then perform cluster analysis. Results: The strains studied could be devided into two subspecies and four types. Conclusion: The resemble degree are high due to a same epidemic resulting types, the differences of types from foci are more outstanding.