In a study of couples in Kenya and Uganda where one partner carried HIV and the other did not, the preventive drug Truvada reduced the risk of the infected partner spreading the disease by 73% .

The FDA will decide by June 15th if a preventive drug, Truvada, for those already exposed to HIV, will be approved for use.  The antiviral drug could be used in relationships to prevent a partner from contracting HIV when his/her partner already has the disease. Big Think

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