Unexplainable A better Black Death story
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May 13, 2026 Researchers revisit the Black Death's origin story and challenge long-held narratives. They debate whether Yersinia pestis and its vectors spread via rats, fleas, or contaminated grain. The famous Kaffa catapult tale is questioned using new primary sources. Climate, famine, and trade are examined as drivers that reshaped how the pandemic moved across regions.
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Plague Confirmation Via Ancient DNA
- The Black Death was conclusively identified as Yersinia pestis after DNA was extracted from teeth in mass graves.
- Ancient DNA from London cemeteries resolved prior doubts that medieval descriptions necessarily meant a different disease.
Rats Aren't The Whole Plague Story
- The familiar rat-plus-flea story is incomplete because other mammals and insect vectors can carry plague.
- Camels, sheep, marmots, and different flea species may have contributed to transmission beyond commensal rats.
Origin And Routes Of Yersinia Pestis Remain Debated
- Tracing Yersinia pestis's origin and routes remains uncertain because genetic trees and historical routes give competing signals.
- Researchers still debate precise Asian origin points and how the bacterium moved into the Middle East and Europe.