Mycobacterium leprea was known to only infect humans and would quickly die outsi

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Mycobacterium leprea was known to only infect humans and would quickly die outside a human host(until recently). Also many, many of the genes a typical pathogenic bacteria needs to be free-living have mutated and have become non-functional pseudogenes.This loss of expressed traits helps M. leprea avoid detection by a human’s immune system but increases its reliance on a human host. This loss of traits or “reductive evolution” appears to have started long ago. --What do these facts suggest about the relationship between humans (and human ancestors) and mycobacterium leprea?

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Mycobacterium leprea was known to only infect humans and would quickly die outsi

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