Leprosy bacterium changed little in last millennium

Genome alterations probably not responsible for decline in disease prevalence

A tooth from the skull of a 600 year-old Danish leprosy victim known as Jorgen_625 contained exceptionally well- preserved DNA of Mycobacterium leprae, the bacterium that causes leprosy. Researchers compiled the organism’s genome from the DNA.

© Ben Krause-Kyora

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