What is the likelihood of drug resistance to preexposure prophylaxis (PrEP) for HIV?

Updated: Oct 08, 2019
  • Author: Alejandro Delgado, MD; Chief Editor: Michael Stuart Bronze, MD  more...
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HIV infection transmitted despite PrEP may be from a strain with acquired drug resistance

The genetic barrier to resistance for tenofovir is high but low with emtricitabine

Emergence of drug resistance could become a problem with more widespread use of ARVs for prophylaxis

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