How has the bacterium Y. pestis evolved to become virulent (based on your assigned literature and...

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Biology

How has the bacterium Y. pestis evolved to become virulent(based on your assigned literature and other literature)? [15points]

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The genus Yersinia consists of 15 species of which three are pathognomic to mammals these are Yersinia pseudotuberculosisYpestisY enterolyticaThis Y pestis is the organism causing plague also known as black death which is blamed for killing third of the population of Europe in middle agesIt still is present in some remote countries which is circulating in zoonotic reservoirs Now moreover there is increased incidence of evolution of MDRS Ypestis this strain is resistant to multiple drugs thus making it even more difficult to treatNow the question comes    See Answer
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