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Plague Bacterium Evolves: Less Deadly Strains Discovered

6/4/2025

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Summary

Story summary

Researchers have unveiled the remarkable adaptability of the plague bacterium Yersinia pestis, revealing how it has evolved over centuries to thrive among humans. By examining ancient and modern samples, they identified a gene mutation that produced less lethal strains, facilitating prolonged transmission. Though cases are rare today, this pathogen's evolution underscores its enduring relevance in history and health.

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Story summary

Researchers have unveiled the remarkable adaptability of the plague bacterium Yersinia pestis, revealing how it has evolved over centuries to thrive among humans. By examining ancient and modern samples, they identified a gene mutation that produced less lethal strains, facilitating prolonged transmission. Though cases are rare today, this pathogen's evolution underscores its enduring relevance in history and health.