MSN News:

A group of researchers from Oxford University and the University of Leuven say they have pinpointed the place where HIV was first transmitted between humans, sparking a pandemic that would go on to touch some 75 million people in every corner of the globe. Through statistical analysis, the group determined that HIV is “almost certain” to have begun its spread from Kinshasa, now the capital city of the Democratic Republic of Congo, sometime around 1920.

The research team analyzed all available HIV-1 viruses sampled from infected persons between 1985 and 2010 to trace the outbreak back to their shared ancestry in a group of infected individuals referred to as “group M” who they say became infected in Kinshasa.

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