Africa: Extra-Couple Relationships a Significant Driver of HIV Epidemic

6 February 2013

Heterosexual couples in long-term relationships who have sexual encounters outside their established partnership (extra-couple relationships) are one of the main drivers of the HIV epidemic in sub-Saharan Africa, according to new research published in The Lancet journal.

The researchers added that their mathematical model showed that transmission within cohabiting couples occurred largely from men to women.

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