From the BBC: Early humans 'may have spread TB'.
Posted on August 20, 2005 06:10 AM. Filed under: history & archaeology.The tuberculosis bacterium emerged in East Africa three million years ago and may have spread around the world when early humans left their ancestral home, a genetic study suggests.
According to molecular analysis of modern strains, the pathogen is much older than previously thought, predating other human afflictions such as the plague. [continue]