In the largest DNA analysis of its kind, scientists have found evidence to suggest historic plague pandemics like the Black Death were not caused by newly evolved strains of bacteria but ones that could have emerged up to centuries before their outbreaks
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. In the largest DNA analysis of its kind, scientists have found evidence to suggest that historic plague pandemics, such as the Black Death, were not caused by newly evolved strains of bacteria but ones that could have emerged up to centuries before their outbreaks.
” Origins of the third plague pandemic The study authors estimated that individually assessed bacterial strains from the third plague pandemic diverged from an ancestral strain between 1806 and 1901, with highly localized plague cases beginning to appear in southern China between 1772 and 1880 and later diverging into various strains that spread globally out of Hong Kong between 1894 and 1901.
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