Methods of diagnostics and differentiation of the plague agent: intraspecies differentiation of Yersinia pestis. Part II

State Research Institute for Plague Control, Rostov-on-Don In the second part of the review aspects of intraspecies differentiation of the plague agent are discussed. Special emphasis is placed on the necessity of more precise definition of taxonomic position of plague agent isolates considering genotypical characteristics, data on their selective virulence, and evolutionary origin of the genus Yersinia.