scholarly journals Top Questions in ID: Pre-exposure Prophylaxis for HIV

2017 ◽  
Vol 4 (4) ◽  
Author(s):  
Douglas S Krakower ◽  
Stephanie E Cohen ◽  
Kenneth H Mayer

Abstract HIV pre-exposure prophylaxis (PrEP) is highly efficacious at preventing HIV acquisition. This review discusses ways to identify candidates for PrEP, recommended PrEP regimens, baseline and follow-up evaluations, applications of PrEP for HIV-serodiscordant couples, resources to address financial barriers, investigational strategies for PrEP, and educational resources for clinicians and patients.

2018 ◽  
Vol 1 ◽  
pp. 3 ◽  
Author(s):  
Renee Heffron ◽  
Kenneth Ngure ◽  
Josephine Odoyo ◽  
Nulu Bulya ◽  
Edna Tindimwebwa ◽  
...  

Background: Pre-exposure prophylaxis (PrEP) can provide high protection against HIV infection and is a recommended intervention for HIV-negative persons with substantial HIV risk.  Demonstration projects conducted in diverse settings worldwide illustrate practical examples of how PrEP can be delivered. This manuscript presents estimates of effectiveness and patterns of PrEP use within a two-year demonstration project of PrEP for HIV-negative members of heterosexual HIV serodiscordant couples in East Africa. Methods: The PrEP delivery model integrated PrEP into HIV treatment services, prioritizing PrEP use for HIV-negative partners within serodiscordant couples before and during the first 6 months after the partner living with HIV initiated antiretroviral therapy (ART).  We measured PrEP uptake through pharmacy records and adherence to PrEP through medication event monitoring system (MEMS) bottle caps and quantification of tenofovir in plasma among a random sample of participants. We estimated HIV infections prevented using a counterfactual cohort simulated from the placebo arm of a previous PrEP clinical trial. Results: We enrolled 1,010 HIV serodiscordant couples that were naïve to ART and PrEP.  Ninety-seven percent of HIV-negative partners initiated PrEP. Objective measures suggest high adherence: 71% of HIV-negative participants took ≥80% of expected doses, as recorded via MEMS, and 81% of plasma samples had tenofovir detected.  Four incident HIV infections were observed (incidence rate=0.24 per 100 person-years), a 95% reduction (95% CI 86-98%, p<0.0001) in HIV incidence, relative to estimated HIV incidence for the population in the absence of PrEP integrated into HIV treatment services.   Conclusions: PrEP uptake and adherence were high and incident HIV was rare in this PrEP demonstration project for African HIV-negative individuals whose partners were known to be living with HIV.  Delivery of PrEP to HIV-negative partners within HIV serodiscordant couples was feasible and should be prioritized for wide-scale implementation.


2017 ◽  
Vol 21 (7) ◽  
pp. 1892-1903 ◽  
Author(s):  
Dvora Joseph Davey ◽  
William Kilembe ◽  
Kristin M. Wall ◽  
Naw Htee Khu ◽  
Ilene Brill ◽  
...  

PLoS ONE ◽  
2018 ◽  
Vol 13 (1) ◽  
pp. e0189869 ◽  
Author(s):  
Dvora Leah Joseph Davey ◽  
Kristin M. Wall ◽  
William Kilembe ◽  
Naw Htee Khu ◽  
Ilene Brill ◽  
...  

Author(s):  
Patrick O’Byrne ◽  
Lauren Orser ◽  
Amanda Vandyk

Patients who use post-exposure prophylaxis (PEP) are at ongoing risk for HIV acquisition after completing PEP. While the Centers for Disease Control and Prevention recommends pre-exposure prophylaxis (PrEP) use immediately after PEP, some practitioners are hesitant to offer PEP-to-PrEP (PEP2PrEP). We began offering PEP2PrEP in the sexually transmitted infection clinic in Ottawa, Canada on August 5, 2018. During the first 16 months of PEP2PrEP, 61 patients requested PEP and 46 were initiated; 30 of these patients agreed to PEP2PrEP and 26 followed through. None of our PEP patients had confirmed HIV exposures; all fulfilled the initiation criterion of condomless anal sex with a male partner of unknown HIV-status. During the study, the number of PEP requests and initiations was statistical unchanged, yet the seroconversion rate among patients who used PEP decreased from 1.7% pre-PEP2PrEP to 0% post-PEP2PrEP. Regarding follow-up, most discontinuations occurred between the PrEP intake and 1-month follow-up visit.


2012 ◽  
Vol 59 (5) ◽  
pp. 463-468 ◽  
Author(s):  
Norma C. Ware ◽  
Monique A. Wyatt ◽  
Jessica E. Haberer ◽  
Jared M. Baeten ◽  
Alexander Kintu ◽  
...  

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S461-S462
Author(s):  
Ronnie M Gravett ◽  
Andrew O Westfall ◽  
Kachina Kudroff ◽  
Edgar T Overton ◽  
Jeanne Marrazzo

Abstract Background Pre-Exposure Prophylaxis (PrEP) effectively prevents HIV acquisition in men who have sex with men (MSM), if taken appropriately. Effective PrEP requires persistence in PrEP care. We defined the PrEP care continuum in a Deep South PrEP clinic and examined factors related to persistence in care among MSM. Methods We reviewed data for MSM at a university-affiliated PrEP clinic in Birmingham, AL from 2014–2018 to define the PrEP continuum at five major steps: screening, initial visit, follow-up visit, current persistence, and self-reported adherence. We defined persistence as attending a PrEP clinic visit in the last 6 months and nonpersistence as prior attendance without a visit in the last 6 months. We compared demographics, insurance status, and patient-reported behaviors from initial and most recent visits between those who persisted (“persisters”) and did not (“non-persisters”) using Wilcoxon rank sum, chi-square, or Fisher’s exact test. Results 226 (100%) MSM were screened, 141 (62%) MSM attended an initial visit, 116 (51%) MSM attended follow-up, 43 (19.0%) persisted in PrEP care, and 29 (13%) MSM self-reported good adherence (figure). Among 139 MSM (46 persisters, 93 nonpersisters), persisters were older than nonpersisters (33 vs. 32 yr, P = 0.03), and were less likely to report inconsistent condom use at their initial visit (48% vs. 73%; P = 0.01) as compared with their last visit (69% vs. 63%, P = 0.13). 23% of persisters and 29% of nonpersisters were black (P = 0.39), and 98% of persisters and 90% of nonpersisters were insured (P = 0.50). 60% of persisters and 74% of nonpersisters had multiple sex partners at initial visit (P = 0.19) as compared with 56% and 60% at their last visit, respectively (P = 0.83). Conclusion At a Deep South PrEP clinic, persistence overall was poor for MSM. More nonpersisters had inconsistent condom use, indicating higher risk despite nonpersistence. Although not statistically significant, nonpersisters were more likely to be black, uninsured, and have multiple sexual partners when compared with persisters. Disparities seen nationally in new HIV diagnoses are reflected in nonpersisters. Nonpersisters may not realize the extent of their risk of HIV acquisition and warrant intensive engagement interventions. Disclosures All authors: No reported disclosures.


2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Nicholas Musinguzi ◽  
◽  
Lara Kidoguchi ◽  
Nelly R. Mugo ◽  
Kenneth Ngure ◽  
...  

Abstract Background PrEP use should be aligned with periods of risk for HIV acquisition. For HIV serodiscordant couples, PrEP can be used as a bridge until the partner living with HIV takes antiretroviral therapy (ART) long enough to achieve viral suppression (the “PrEP as a Bridge to ART” strategy). However, adherence to this strategy is unknown. Methods In a demonstration project in Kenya and Uganda, HIV-uninfected partners of serodiscordant couples were advised to take PrEP until the partner living with HIV took ART for ≥ 6 months. PrEP discontinuation was then recommended unless there were concerns about ART adherence, immediate fertility intentions, or outside partners with unknown HIV/ART status. Electronic adherence monitoring and socio-behavioral questionnaire data were used in logistic regression models to explore completion of this strategy and continuation of PrEP beyond recommendations to stop its use. Results Among 833 serodiscordant couples, 436 (52%) HIV-uninfected partners completed ≥ 6 months of PrEP as a bridge to ART. Strategy completion was associated with older age (aOR per 5 years = 1.1; p = 0.008) and having fewer children (aOR = 0.9; p = 0.019). Of the 230 participants encouraged to stop PrEP according to strategy recommendations, 170 (74%) did so. PrEP continuation among the remaining 60 participants was associated with more education (aOR = 1.1; p = 0.029), a preference for PrEP over ART (aOR = 3.6; p = 0.026), comfort with managing their serodiscordant relationship (aOR = 0.6; p = 0.046), and believing PrEP makes sex safe (aOR = 0.5; p = 0.026). Conclusion Half of participants completed the PrEP as a bridge to ART strategy and the majority stopped PrEP as recommended. These findings suggest that targeting PrEP to periods of risk is a promising approach; however, tailoring counseling around aligning PrEP use and HIV risk will be important for optimal strategy implementation.


PLoS ONE ◽  
2015 ◽  
Vol 10 (1) ◽  
pp. e0115511 ◽  
Author(s):  
Britta L. Jewell ◽  
Ide Cremin ◽  
Michael Pickles ◽  
Connie Celum ◽  
Jared M. Baeten ◽  
...  

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