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===Pre-exposure prophylaxis (PrEP)=== {{Main|Pre-exposure prophylaxis}} [[Pre-exposure prophylaxis]] (often abbreviated as ''PrEP'') is the use of prescription drugs by those who do not have HIV to prevent HIV infection. PrEP drugs are taken ''prior'' to HIV exposure to prevent the transmission of the virus, usually between sexual partners. PrEP drugs do not prevent other STI infections or pregnancy.<ref>{{Cite journal |last1=Kumar |first1=Sagar |last2=Haderxhanaj |first2=Laura T. |last3=Spicknall |first3=Ian H. |date=June 2021 |title=Reviewing PrEP's Effect on STI Incidence Among Men Who Have sex with Men-Balancing Increased STI Screening and Potential Behavioral Sexual Risk Compensation |journal=AIDS and Behavior |volume=25 |issue=6 |pages=1810β1818 |doi=10.1007/s10461-020-03110-x |issn=1573-3254 |pmc=8085068 |pmid=33242186}}</ref> As of 2018, the most-widely approved form of ''PrEP'' combines two drugs (tenofovir and emtricitabine) in one pill. That drug combination is sold under the brand name [[Truvada]] by Gilead Sciences. It is also sold in generic formulations worldwide. Other drugs and modalities are being studied for use as PrEP.<ref>{{Cite web |title=Pre-exposure Prophylaxis (PrEP) to Reduce HIV Risk | work = National Institute of Allergy and Infectious Diseases | date = 10 December 2020 |url=https://www.niaid.nih.gov/diseases-conditions/pre-exposure-prophylaxis-prep |access-date=2022-06-27 |language=en}}</ref><ref>{{cite journal | vauthors = Beymer MR, Holloway IW, Pulsipher C, Landovitz RJ | title = Current and Future PrEP Medications and Modalities: On-demand, Injectables, and Topicals | journal = Current HIV/AIDS Reports | volume = 16 | issue = 4 | pages = 349β358 | date = August 2019 | pmid = 31222499 | pmc = 6719717 | doi = 10.1007/s11904-019-00450-9 }}</ref> Different countries have approved different protocols for using the tenofovir/emtricitabine-combination drug as ''PrEP''. That two-drug combination has been shown to prevent HIV infection in different populations when taken daily, intermittently, and on demand. Numerous studies have found the tenofovir/emtricitabine combination to be over 90% effective at preventing HIV transmission between sexual partners.<ref>{{cite web |url=https://www.cdc.gov/hiv/risk/prep/ |title=Pre-Exposure Prophylaxis (PrEP) |date=19 September 2016 |publisher=Centers for Disease Control and Prevention |access-date=14 March 2017}}</ref> AVAC has developed a tool to track trends in PrEP uptake across the globe.<ref>{{Cite web |title=PrEP {{!}} AVAC |url=https://avac.org/prevention-option/prep/ |access-date=2024-02-07 |website=avac.org}}</ref>
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