Researchers believe they have finally pinpointed the origin of the Black Death, solving a 684-year-old mystery.
The second plague pandemic, which began in the 14th century and swept through Europe, Asia and elsewhere, killed millions, upended societies and even. For decades, researchers have chased leads and debated where the pandemic originated, with plenty of theories, but little certain evidence.
Some historians long suspected the burial sites examined in Kyrgyzstan had contained plague victims. Now, there’s physical proof. There are several theories of how the bacteria spread in the 14th century. The most popular theory is that it was spread by biting fleas that accompanied black rats, which sometimes hitched a ride to new places with traveling humans. Another theory blames human fleas and body lice.
“Obviously, when you have one or two years with excess mortality, that means something funny is going on there,” Slavin said in a recent news conference. “And 1339 is just seven or eight years before the Black Death came to Europe.” The researchers found the strain identified in the cemeteries was an ancestor of genomes from victims of the Black Death about eight years later.
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Ancient DNA traces origin of Black DeathGenomes show that plague-causing bacteria found in Kyrgyzstan graves are direct ancestors of those that triggered the medieval pandemic.
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