Determinants of adherence to non-occupational post HIV exposure prophylaxis

Health care services for survivors of gender-based violence: a community and clinic-based intervention in Zambézia province, Mozambique

Mozambique introduced guidelines for integrated gender-based violence (GBV) services in 2012. In 2017, we trained providers on empathetic and supportive services to GBV survivors and introduced home-based services for survivors who are loss-to-follow up. Rate ratios of clinic visits were compared before and after intervention initiation, using exact significance tests. Data of 1,806 GBV survivors were reviewed, with a total of 2005 events. The median age was 23 years (IQR 17-30) and 89% were women. Among those reporting violence, 69% reported physical violence, 18% reported sexual violence (SV), and 12% reported psychological violence. Rates of care-seeking behavior were higher in the intervention period (rate ratio 1.31 [95%CI: 1.18-1.46]); p < 0.01. Among those eligible for post-exposure prophylaxis (PEP), 94% initiated PEP. Uptake of HIV retesting improved in percentage points by 34% (14% to 48%), 34% (8% to 42%) and 26% (5% to 31%) at 1-, 3- and 6-months, respectively. The intervention led to an increase in the rate of GBV survivors seeking health care services, and improved rates of follow-up care among SV survivors initiating PEP. Strengthening of PEP adherence counseling remains crucial for improving GBV services.

HIV Nonoccupational Postexposure Prophylaxis Among Men Who Have Sex with Men: A Systematic Review and Meta-Analysis of Global Data

HIV nonoccupational postexposure prophylaxis (nPEP) has been prescribed to men who have sex with men (MSM) for decades, but the global situation of nPEP implementation among this population remains unclear. To understand nPEP awareness, uptake, and factors associated with uptake among MSM, we searched PubMed, Scopus, Embase, the Cochrane Library, and Web of Science for studies reporting nPEP implementation among MSM published before May 19, 2019. We estimated pooled rates and their 95% confidence intervals (CIs) of awareness, uptake using a random-effects model. We identified 74 studies: 3 studies (4.1%) from upper-middle-income regions and 71 (95.9%) from high-income regions. The pooled rate of nPEP awareness and uptake was 51.6% (95% CI 40.6-62.5%) and 6.0% (5.0-7.1%), respectively. Pooled uptake rate was higher in upper-middle-income regions [8.9% (7.8-10.0%)] than in high-income regions [5.8% (4.8-6.9%)]. Unprotected anal sex was the most common exposure (range: 55.0-98.6%, median: 62.9%). Pooled completion of nPEP was 86.9% (79.5-92.8%). Of 19,546 MSM prescribed nPEP, 500 HIV seroconversions (2.6%) were observed. Having risky sexual behaviors and history of sexually transmitted infections were associated with higher nPEP uptake, whereas insufficient knowledge, underestimated risk of exposure to HIV, lack of accessibility, and social stigma might hinder nPEP uptake. Awareness and uptake of nPEP among MSM worldwide are low. Further efforts are needed to combat barriers to access nPEP, including improving accessibility and reducing stigma. Seroconversions post-nPEP uptake suggest that joint prevention precautions aside from nPEP are needed for high-risk MSM. More evidence from low-income and middle-income regions is needed.

Nonoccupational post-exposure prophylaxis for HIV after sexual intercourse among women in Brazil: Risk profiles and predictors of loss to follow-up

Access to antiretroviral-based HIV prevention has been marked by sex asymmetries, and its effectiveness has been compromised by low clinical follow-up rates. We investigated risk profiles of women who received nonoccupational post-exposure prophylaxis (nPEP), as well as the rates and predictive factors of loss to follow-up after nPEP initiation.Retrospective study evaluating 501 women who received nPEP between 2014 and 2015 at 5 HIV centers (testing centers-VCT, outpatient clinics, and infectious diseases hospital). Risk profiles were drawn based on the characteristics of the women and their sexual partners, and then stratified by sociodemographic indicators and previous use of HIV prevention services. Loss to follow-up (LTFU) was defined as not presenting for follow-up visits or for HIV testing after nPEP initiation. Predictors of LTFU were analyzed by calculating adjusted prevalence ratios (aPRs).Approximately 90% of women had sexual encounters that met the criteria established in the Brazilian guidelines for nPEP. Those who declared to be sex workers (26.5%) or drug users (19.2%) had the highest social vulnerability indicators. In contrast, women who had intercourse with casual partners of unknown HIV risk (42.7%) had higher education and less experience with previous HIV testing (89.3%) or nPEP use (98.6%). Of the women who received nPEP after sexual intercourse with stable partners, 75.8% had HIV-infected partners. LTFU rate was 72.8% and predictors included being Black (aPR = 1.15, 95% confidence interval [CI]: 1.03-1.30), using drugs/alcohol (aPR = 1.15, 95% CI: 1.01-1.32) and having received nPEP at an HIV outpatient clinic (aPR = 1.35, 95% CI: 1.20-1.51) or at an infectious diseases hospital (aPR = 1.37, 95% CI: 1.11-1.69) compared with a VCT. The risk of LTFU declined as age increased (aPR 41-59 years = 0.80, 95% CI: 0.68-0.96).Most women who used nPEP had higher socioeconomic status and were not part of populations most affected by HIV. In contrast, factors that contribute to loss to follow-up were: having increased social vulnerability; increased vulnerability to HIV infection; and seeking nPEP at HIV treatment services as opposed to at a VCT.

Starter packs versus full prescription of antiretroviral drugs for postexposure prophylaxis: a systematic review

BACKGROUND

The provision of starter packs for human immunodeficiency virus postexposure prophylaxis (PEP) is practiced in many settings to facilitate rapid initiation by nonexperts and encourage adherence. However, the impact of starter packs on PEP completion rates has not been systematically assessed. We systematically reviewed the evidence on outcomes associated with starter packs for PEP compared to full prescriptions.

METHODS

Four databases and 2 conference abstract sites were searched up to December 2013; this search was updated in 1 database in June 2014. PEP completion rates, stratified by prescribing practice, were pooled using random-effects meta-analysis.

RESULTS

Fifty-four studies provided data on 11 714 PEP initiations. Thirty-seven studies, including 3 randomized controlled trials (RCTs) and 34 observational cohorts, provided information on starter packs (although none of the RCTs specifically assessed starter packs), and 17 studies, including 2 RCTs and 15 observational cohorts, provided information on full prescriptions. Overall, outcomes were better when participants were offered a full 28-day course of PEP at initial presentation to healthcare, with fewer refusals (11.4% [95% confidence interval {CI}, 5.3%-17.5%] vs 22% [95% CI, 16.7%-28.1%]) and higher completion rates (70% [95% CI, 56.7%-77.3%] vs 53.2% [95% CI, 44.4%-62.2%]). More than a quarter (28% [95% CI, 21.4%-34.5%]) of individuals provided with a PEP starter pack failed to return for their subsequent appointment and therefore defaulted prior to receiving a full course of PEP. The quality of the evidence overall was rated as very low.

CONCLUSIONS

The findings of this review suggest that starter packs do not improve adherence to PEP and may result in lower adherence and completion rates.

Overviewing a Nurse-Led, Community-Based HIV PEP Program: Applying the Extant Literature in Frontline Practice

This clinical concept paper overviews a program to facilitate access to postexposure prophylaxis (PEP) for gay, bisexual, and other men who have sex with men. The project, which was a collaborative initiative involving the local School of Nursing, public health unit, AIDS service organization, hospital-based HIV clinic, and an outpatient pharmacy, was implemented to circumvent common barriers to care identified in the literature. In this project, persons who present to one of the two participating clinics after having come, or likely having come, into contact with HIV within the previous 72 hr, are offered rapid HIV testing, also known as point-of-care (POC) testing, to rule out existing HIV infection, and provided with a follow-up appointment booked at the HIV clinic. Clients are also offered comprehensive STI testing, and HIV prevention counseling. The implementation of this collaborative community-based access-to-PEP project demonstrates the application of research to a real-world health care setting, and it is hoped that others will adapt this model to their local setting, enabling ease of access to PEP for members of groups that are disproportionately affected by HIV.

Adherence to post-exposure prophylaxis for non-forcible sexual exposure to HIV: a systematic review and meta-analysis

To characterize adherence to post-exposure prophylaxis after non-forcible sexual exposure to HIV, we conducted a review of the literature and meta-analysis. Articles were considered if they contained primary adherence data following non-forcible sexual exposure. Random-effects meta-analysis was used to create pooled point estimates for adherence. Of 1,257 abstracts identified through our search algorithm, 17 were eligible for inclusion in this review, representing 3,634 patients enrolled in 3 randomized controlled trials (RCTs), 9 prospective and 5 retrospective observational studies. Pooled adherence, primarily assessed by self-report, was 77 % [95 % confidence interval (CI) 68-87] in prospective observational studies, 81 % (95 % CI 65-96) in retrospective studies, 78 % (95 % CI 65-91) in RCTs, and 78 % (95 % CI 72-85) overall. Overall adherence was moderately high, with high variability between studies. Assessment of adherence could be enhanced by the use of objective measurements.

Non-occupational HIV post-exposure prophylaxis at a Sydney metropolitan sexual health clinic

Background Non-occupational HIV post-exposure prophylaxis (NPEP) is prescribed following a risk exposure in an effort to reduce the risk of HIV seroconversion. We aimed to describe the prescribing practices of NPEP at RPA Sexual Health in Sydney, the prevalence and correlates of adverse events (AEs), and factors associated with completing the 28-day course. Methods: The study population included individuals prescribed NPEP during January 2008–December 2011. Correlates of AEs and course completion were assessed by logistic regression. Results: On 319 occasions during the study period, 282 individuals presented for NPEP. Over 90% of presentations followed unprotected anal intercourse between men, mostly receptive (63.6%). Tenofovir–emtricitabine–stavudine (n = 149; 46.7%) and tenofovir–emtricitabine (n = 136; 42.6%) were most commonly prescribed. AEs were reported at 101 presentations (31.7%, 95% confidence interval (CI): 26.6–37.1%), with nausea and lethargy/malaise being the most common. Younger age (P for trend = 0.032), earlier year of NPEP prescription (P for trend = 0.011), being prescribed a regimen other than tenofovir–emtricitabine (P = 0.026), changing the NPEP regimen (P < 0.001) and known completion of the course (P = 0.005) were independently associated with AEs. The course was completed in 228 presentations (71.5%, 95% CI: 66.2–76.4%). Completion was associated with reporting AEs (P = 0.007) and changing regimen (P = 0.001). No documented NPEP failures were identified, although two recipients subsequently seroconverted to HIV due to ongoing high-risk behaviour. Conclusions: NPEP is appropriately targeted to the highest risk HIV exposures at our clinic. Active recall may improve follow-up rates in NPEP recipients.

Acceptability of PrEP for HIV prevention among women at high risk for HIV

OBJECTIVE

To assess the acceptability of a daily pill for prevention of HIV acquisition among 400 Ghanaian women in the oral tenofovir disoproxil fumarate (TDF) clinical trial.

METHODS

Structured questionnaires were conducted with women enrolled in the trial at enrollment and at each of the 12 monthly follow-up visits. Growth curve analysis was used to examine adherence patterns over time. Qualitative interviews were carried out with a subsample of the clinical trial population, and thematic analysis was applied to these data.

RESULTS

Overall, acceptability of the pill was good. Adherence remained > 82% throughout the 12-month trial. Consistent access to the pill and study assignment were both associated with adherence. Most reported problems diminished over time as women became accustomed to the pill and developed strategies to incorporate pill taking into their daily routines.

CONCLUSIONS

If daily preexposure prophylaxis (PrEP) for HIV is found to be efficacious and has as few physical side effects as TDF, acceptability of this method among women in the study population may not be problematic. However, future studies must develop better acceptability measures, in order to more fully address the relationship among adherence, safety, and effectiveness.

Evaluating counseling outcome on adherence to prophylaxis and follow-up after sexual HIV-risk exposure: a randomized controlled trial

OBJECTIVE

Post-exposure prophylaxis (PEP) is recommended for the management of sexual HIV-risk exposure. However, a high percentage of exposed patients discontinue both their 28-day prophylaxis course before 15 days and HIV testing follow-up before M3. The objective of this study is to assess the efficacy of a counseling intervention in enhancing both adherence to PEP and HIV testing follow-up.

METHODS

Between 1 June 2004 and 31 December 2005, 54 patients exposed to sexual HIV-risk exposure were included in a multicenter, prospective, controlled, randomized trial, comparing a group receiving a counseling intervention in addition to traditional medical management (intervention group (IG), n=28) vs. a control group (CG, n=26). Patients in the IG received interactive counseling interventions focused on adherence to PEP and to HIV testing follow-up, led by specially trained nurses. The main outcome measures were proportion of patients achieving 100% adherence to PEP as evaluated on D15 by a self-completed patient questionnaire and on HIV testing on D45 and M3.

RESULTS

Groups were well balanced at baseline for age, sex, and circumstances of exposure. The proportion of 100% adherent patients to PEP was significantly higher in the IG compared to the CG (54% vs. 23%, p=0.036). Patients in the IG were more likely to complete the HIV testing follow-up at D45 (86% vs. 54%, p=0.023) and M3 (68% vs. 38%, p=0.056).

CONCLUSIONS

This study suggests the effectiveness of a counseling program to enhance adherence to both PEP and HIV testing follow-up after sexual exposure.

Methamphetamine use and infectious disease-related behaviors in men who have sex with men: implications for interventions

AIMS

Review the current evidence regarding the prevalence of methamphetamine use among men who have sex with men (MSM) and to evaluate the factors that contribute to methamphetamine use and potential for sexual transmission of HIV and other infectious diseases.

METHODS

Databased reports address (1) epidemiology of methamphetamine use in MSM; (2) methamphetamine use and risk behaviors for sexually transmitted infections; and (3) interventions.

FINDINGS

Methamphetamine use is highly prevalent in MSM. Strong associations between methamphetamine use and HIV-related sexual transmission behaviors are noted across studies of MSM and correspond to increased incidence for HIV and syphilis compared to MSM who do not use the drug. Behavioral treatments produce sustained reductions in methamphetamine use and concomitant sexual risk behaviors among methamphetamine-dependent MSM.

CONCLUSIONS

Brief screening of methamphetamine use for MSM who seek physical, mental health and substance abuse services is recommended. Behavioral interventions that address methamphetamine use may range from brief interventions to intensive out-patient treatments.