Strains of HIV are becoming resistant to an antiretroviral drug commonly used to prevent and fight the virus, research has suggested.
HIV was resistant to the drug Tenofovir in 60% of selected cases in some African countries, according to the study, which covered a 17-year period.
The research, led by University College London, looked at 1,920 HIV patients worldwide who had treatment failure.
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Source Credits: Dominic Howell in BBC Health