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(ZEROHEDGE) – The Black Death was one of the world's largest mortality events ever, wiping out 30-60% of the global population as it swept through North Africa, Europe, and Asia 700 years ago.
Newly published research in the medical journal Nature reveals the ancient dead had a secret. DNA samples from victims and survivors of the bacterium Yersinia pestis, also known as the bubonic plague, had distinct genetic differences that helped some survive while others succumbed to death.
Those genetic differences likely altered the evolution of the human genome, as survivors of the plague passed on genes that once helped them survive the awful plague pathogen to offspring and are now linked to a greater chance of autoimmune diseases such as Crohn's and rheumatoid arthritis today.
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