Persistence on oral pre-exposure prophylaxis (PrEP) among female sex workers in eThekwini, South Africa, 2016–2020

A Competing Risks Duration Model to Study PrEP Discontinuation Among MSM in France: The ERAS 2023 Study

Although PrEP prevents HIV among at-risk populations, high discontinuation rates hinder its effectiveness. We investigated three reasons for PrEP discontinuation in real-life settings in France and associated factors, in order to assess weariness taking PrEP. We used data from the French online survey Enquête Rapport au Sexe 2023 which targeted gay and bisexual men having sex with men (GBMSM). First, we constructed the outcome 'PrEP duration'. Second, we created a three-category 'reason for PrEP discontinuation' variable as follows: changes in sexual behaviors, a desire to discontinue PrEP, and clinical reasons. Third, we calculated PrEP survival probability. We then performed a Weibull accelerated failure time model with competing risks to assess how the duration of time on PrEP influenced discontinuation, and whether specific factors were associated with different discontinuation reasons. The analysis included 4819 GBMSM. Median PrEP duration was 19 months. Discontinuation because of changes in sexual behaviors was less likely among GBMSM who initiated PrEP prescription in a sexual health structure (AF = 0.604 [0.424-0.858]). A desire to stop PrEP was more likely among those living in regions with the lowest reported seropositivity rates (AF = 2.320 [1.054-5.107]). Discontinuing PrEP for clinical reasons was more likely among participants coming from smaller municipalities (AF = 2.312 [1.099-4.868]). PrEP duration dependence was negative for all three reasons, implying that the longer the time taking PrEP, the lower the probability of discontinuation. We found no weariness with PrEP use among GBMSM; this highlights the need to detail specific factors associated with PrEP discontinuation.

Alcohol Use and the Pre-exposure Prophylaxis Continuum of Care Among Men in Rural South Africa: Results from a Longitudinal Study

Despite freely available oral HIV pre-exposure prophylaxis (PrEP), HIV incidence among young men in South Africa remains high. This study explores the impact of alcohol use on PrEP initiation and continuation among South African men. We performed a secondary data analysis from a trial involving men aged 16-29, randomly selected in KwaZulu-Natal. Participants were referred to sexual health services, and those who were HIV negative and sexually active were offered oral PrEP. Alcohol consumption was categorized using AUDIT-C criteria as no/low risk (0-3) and hazardous alcohol use (4-12). Primary outcomes were PrEP initiation and continuation, defined as refilling prescriptions for ≥ 4 months. Logistic regression models adjusted for clinical and demographic confounders estimated relationships between PrEP initiation/continuation and alcohol use. Among 325 men analyzed, average age was 22.9 years (SD 3.6), with 146 (45%) reporting hazardous alcohol consumption. PrEP initiation was greatest among the hazardous/very-high risk group (40%), with the lowest uptake among men who do not use alcohol (17%). In multivariate analyses, those with hazardous alcohol use remained more likely to initiate PrEP compared to those with no/low risk alcohol use (aOR 1.96, 95%CI 1.13-3.40; p-value = 0.017). Only 27% (24/88) remained on PrEP at 4 months, with continuation similar between alcohol use groups (aOR 1.56, 95%CI: 0.47-5.12, p = 0.47). Hazardous alcohol use is prevalent among men in rural South Africa and associated with increased PrEP initiation. However, overall PrEP continuation was low and consistent across alcohol use levels. Hazardous alcohol use should not deter PrEP implementation efforts to engage young men.

HIV pre-exposure prophylaxis re-initiation among men who have sex with men: a multi-center cohort study in China

Background Data on persistent use of HIV pre-exposure prophylaxis (PrEP) is limited among Chinese men who have sex with men (MSM). This study aimed to explore factors associated with the re-initiation of PrEP among Chinese MSM from a longitudinal PrEP demonstration trial. Methods A multi-center cohort study was conducted in Guangzhou and Wuhan, China (September 2021-2024), providing 1134 MSM participants with a 12-month dosage of tenofovir disoproxil fumarate and emtricitabine (TDF/FTC) as oral PrEP. Following the trial, a subgroup of participants were invited to complete a 3-month post-trial follow-up survey. These participants were categorized on the basis of self-reported PrEP use patterns into (1) continued PrEP use, (2) discontinued without re-initiation, and (3) re-initiated after discontinuation. Log-binomial regression models were used to assess factors associated with PrEP re-initiation. Results Out of 408 participants who completed the 3-month post-trial follow-up survey, 70.1% (n =286/408) reported discontinuing PrEP, and 50.7% (n =145/286) of those who discontinued subsequently re-initiated PrEP. Participants who had concurrent sexual partnerships (adjusted risk ratio [aRR]=1.47, 95% CI: 1.11-1.96), used drugs during sex (aRR=1.34, 95% CI: 1.09-1.65), or lived alone (aRR=1.29, 95% CI: 1.03-1.61) were more likely to re-initiate PrEP. The Likert scale analysis indicated that perceived partner influence, specifically the expectation of condomless sex, played a significant role in re-initiation decisions (P =0.03). Conclusion Individuals engaging in higher-risk behaviors are more likely to re-initiate PrEP, highlighting the dynamic nature of risk perception. Future interventions should focus on promoting both re-initiation and consistent condom use, emphasizing partner-related dynamics and substance use as key factors in PrEP decisions among MSM.

Condomless sexual encounters among female sex workers included in a longitudinal coital diary study in Zimbabwe

BACKGROUND

Compared with the general female population, female sex workers (FSWs) experience a greater burden of STIs, including HIV. Consistent condom use reduces HIV risk; however, while many FSWs are aware of condom efficacy, this knowledge does not consistently translate into use. We aimed to estimate the prevalence and patterns of condomless sex by partner type at the sexual encounter level, as well as identify factors associated with condomless sex among FSWs recruited into a diary study in Zimbabwe.

METHODS

We conducted a longitudinal coital diary study in site A and site B between 25 November 2020 and 30 December 2021. Pictorial diaries were developed in collaboration with FSWs. We recruited participants using snowball sampling and asked them to complete a daily diary of their sexual encounters with each partner for one month, repeated over three non-consecutive months within 12 months. The following FSW characteristics were recorded: FSW age, Key Populations (KP) Programme contact, partner type and age, condom use categorized as none, partial, or full, types of sexual activity, and violence experiences. To identify factors associated with condomless sex, we used hierarchical Poisson regression modelling.

RESULTS

404 FSWs documented 62,559 sex encounters, with 17,325 (27.7%) reported as condomless. Our adjusted analysis showed that encounters with permanent partners had the highest likelihood of being condomless (59.5%; adjusted relative risk [aRR] 3.83, 95% CI: 3.38-4.35), followed by regular partners (25.6%; aRR 1.63, 95% CI: 1.50-1.78), compared to new partners (15.0%). Compared with FSWs aged < 25 years (29.7%), those aged ≥ 35 years were less likely to have condomless sex (22.1%; aRR 0.79, 95% CI: 0.66-0.94), while sex without violence was less likely (24.1%) to be condomless than sex with violence (57.7%; aRR 2.32, 95% CI: 2.00-2.70). FSWs with the KP programme contact reported fewer condomless encounters (25.9%; aRR 0.81, 95% CI: 0.90-0.94) than those without (32.9%).

CONCLUSION

Condomless sex was common and varied based on FSW age, partner type, experiencing violence during sex, and KP programme contact. These findings emphasize the need for continued condom promotion, counseling, violence mitigation, and training in condom negotiation skills especially given the heightened risk of HIV transmission among FSWs.

Engaging the private sector as part of HIV pre-exposure prophylaxis service delivery in Vietnam: a comparative analysis of uptake, persistence and HIV seroconversion from 2018 to 2023

Background

In Vietnam, PrEP was introduced in 2017 and scaled up from 2019. Private sector engagement (PSE) in PrEP service delivery was deployed as a strategy from the start to increase PrEP access. We assessed the effectiveness of this approach to inform ongoing efforts to accelerate epidemic control by 2030.

Methods

We implemented a process evaluation with longitudinal design using retrospective programmatic data collected and uploaded onto a secure online system (HMED) from 23 public and 17 private PrEP clinics in Hanoi, Ho Chi Minh City (HCMC), and Dong Nai. We measured the effectiveness of PrEP service delivery by PrEP initiation/reinitiation, uptake, persistence, discontinuation, and HIV seroconversion. We used the Kaplan-Meier time-to-event approach to estimate PrEP persistence and mixed-effects logistic regression analysis to assess factors associated with the PrEP persistence.

Results

From October 2017 to September 2023, 29,944 individuals initiated PrEP, and among these, 79.3% started PrEP at a private sector clinic while 20.7% initiated in a public sector clinic. The median duration of PrEP use persistence at private clinics was significantly longer than that at public clinics (268 days vs. 148 days, respectively). Mixed-effects logistic regression analysis results indicated a significant statistical association between PrEP persistence for at least three months and initiating PrEP at a private clinic [adjusted odds ratio [aOR] = 4.28; 95% confidence interval [CI]: 2.96-6.19], opting for TelePrEP (aOR = 3.42; 95% CI: 2.12-5.53), or being 20 years of age or older (aOR = 1.86; 95% CI: 1.62-2.13). HIV seroconversion was significantly lower among PrEP users at private clinics compared to public clinics (0.03 vs. 0.13 per 100 person-years, respectively; p < 0.01).

Conclusion

Offering choice in PrEP service delivery options is essential to increase access and uptake. Private-sector PrEP providers play a pivotal role in increasing PrEP uptake and coverage in Vietnam, and will be critical to delivery of new long-acting options.

Determinants of continuation on HIV pre-exposure propylaxis among female sex workers at a referral hospital in Uganda: a mixed methods study using COM-B model

BACKGROUND

Female sex workers (FSWs) have the highest HIV prevalence in Uganda. Pre-exposure prophylaxis (PrEP) has been recommended as a key component of the HIV combination prevention strategy. Although patient initiation of PrEP has improved, continuation rates remain low. This study evaluated PrEP continuation among FSWs and explored potential determinants of PrEP adherence within a public referral hospital in urban Uganda.

METHODS

We conducted an explanatory sequential mixed method study at Kiruddu National referral hospital in Uganda. Secondary data on socio demographic characteristics and follow up outcomes of at least one year was collected for all FSWs who were initiated PrEP between May 2020 and April 2021 and data analyzed on July 15,2023. We used Kaplan-Meier survival analysis to evaluate continuation on PrEP from time of initiation and follow-up period. The capability, opportunity, and motivation to change behaviour model was used to explore perspectives and practices of FSWs (n = 24) and health care providers (n = 8) on continuation on PrEP among FSWs, using semi structured interviews. The qualitative data was deductively coded and analyzed thematically, categorizing the themes related to PrEP continuation as facilitators and barriers.

RESULTS

Of the 292 FSWs initiated on PrEP, median age was 26 years (interquartile range, 21-29), 101 (34.6) % were active on PrEP, 137 (46.9%) were lost to follow-up, 45 (15.4%) were no longer eligible to continue PrEP, eight (2.7%) were transferred out and one (0.3%) had died. Median survival time on PrEP was 15 months (Interquartile range IQR, 3-21). The continuation rates on PrEP at six (6) and 12 months were 61.1% and 53.1%, respectively. Facilitators of PrEP continuation included awareness of risk associated with sex work, integration of PrEP with other HIV prevention services, presence of PrEP Peer support and use of Drop-in centers. The barriers included low community awareness about PrEP, high mobility of sex workers, substance abuse, and the unfavorable daytime clinic schedules. However, the quantitative findings from the multivariable Cox Proportional Hazards Model did not align with the reported findings for the qualitative evaluation.

CONCLUSION

Continuation on PrEP remains low among FSWs. Interventions for PrEP continuation should address barriers such as low community awareness of PrEP, substance abuse and restrictive health facility policies for scale of the PrEP program among FSWs in Uganda. Integration of PrEP with other services and scale up of community PrEP delivery structures may improve its continuation.

A decade of PrEP: the evolution of HIV pre-exposure prophylaxis content and sentiments in South African print news media, 2012-2021

After nearly a decade of HIV pre-exposure prophylaxis (PrEP) rollout in sub-Saharan Africa, there has been limited study of PrEP messaging in news media. We selected twenty South African newspapers with the highest circulation volumes to retrieve articles published in 2012-2021 mentioning PrEP (N = 249). Using inductive content analysis, we developed a structured codebook to characterise PrEP-related content and sentiments, as well as their evolution over time, in the South African press. Many articles espoused favourable attitudes towards PrEP (52%), but a sizeable fraction espoused unfavourable attitudes (11%). Relative to PrEP-favourable articles, PrEP-unfavourable articles were significantly more likely to emphasise the drawbacks/consequences of PrEP use, including adherence/persistence requirements (52% vs. 24%, p = .007), cost (48% vs. 11%, p < .001), and risk compensation (52% vs. 5%, p < .001). Nevertheless, the presence of these drawbacks/consequences in print media largely declined over time. Key populations (e.g. adolescents, female sex workers) were frequently mentioned potential PrEP candidates. Despite message variations over time, prevention effectiveness and adherence/persistence requirements were the most widely cited PrEP benefits and drawbacks, respectively. Study findings demonstrate the dynamic nature of PrEP coverage in the South African press, likely in response to PrEP scale-up and real-world PrEP implementation during the study period.

PrEP discontinuation, cycling, and risk: Understanding the dynamic nature of PrEP use among female sex workers in South Africa

PrEP cycling among women is thought to be safe when there are distinct "seasons of risk." However, cyclical PrEP use over short periods may be associated with increased risk of HIV acquisition. We aimed to characterize key social ecological factors contributing toward PrEP cycling among female sex workers (FSW) in the context of high HIV risk. Semi-structured, in-depth interviews were conducted with 36 FSW at risk for HIV acquisition and 12 key informant (KI) service providers in eThekwini (Durban), South Africa from January-October 2020. FSW identified key factors driving temporary discontinuation of PrEP including relocation, lack of information on or difficulty coping with side effects, and delays in accessing PrEP. In many cases, FSW were motivated to restart PrEP once barriers were overcome. In contrast, KIs emphasized the importance of individual adherence to PrEP and reliance on personal risk assessments when counselling FSW on cycling decisions. FSW and KI perspectives highlight a disconnect between providers' recommendations on the potential for cyclical use of PrEP during periods of minimal risk and actual drivers among FSW causing temporary PrEP discontinuation. Further interventions supporting safe PrEP cycling are needed to ensure decisions around cycling are deliberate and guided by changes in HIV risk rather than external factors.

Mixed-methods protocol for the WiSSPr study: Women in Sex work, Stigma and psychosocial barriers to Pre-exposure prophylaxis in Zambia

INTRODUCTION

Women engaging in sex work (WESW) have 21 times the risk of HIV acquisition compared with the general population. However, accessing HIV pre-exposure prophylaxis (PrEP) remains challenging, and PrEP initiation and persistence are low due to stigma and related psychosocial factors. The WiSSPr (Women in Sex work, Stigma and PrEP) study aims to (1) estimate the effect of multiple stigmas on PrEP initiation and persistence and (2) qualitatively explore the enablers and barriers to PrEP use for WESW in Lusaka, Zambia.

METHODS AND ANALYSIS

WiSSPr is a prospective observational cohort study grounded in community-based participatory research principles with a community advisory board (CAB) of key population (KP) civil society organi sations (KP-CSOs) and the Ministry of Health (MoH). We will administer a one-time psychosocial survey vetted by the CAB and follow 300 WESW in the electronic medical record for three months to measure PrEP initiation (#/% ever taking PrEP) and persistence (immediate discontinuation and a medication possession ratio). We will conduct in-depth interviews with a purposive sample of 18 women, including 12 WESW and 6 peer navigators who support routine HIV screening and PrEP delivery, in two community hubs serving KPs since October 2021. We seek to value KP communities as equal contributors to the knowledge production process by actively engaging KP-CSOs throughout the research process. Expected outcomes include quantitative measures of PrEP initiation and persistence among WESW, and qualitative insights into the enablers and barriers to PrEP use informed by participants' lived experiences.

ETHICS AND DISSEMINATION

WiSSPr was approved by the Institutional Review Boards of the University of Zambia (#3650-2023) and University of North Carolina (#22-3147). Participants must give written informed consent. Findings will be disseminated to the CAB, who will determine how to relay them to the community and stakeholders.

Transactional sex and age-disparate sexual partnerships among adolescent girls and young women in Tanzania

Introduction

Adolescent girls and young women (AGYW) continue to experience a high incidence of HIV in southern and eastern Africa, even in the context of large-scale HIV prevention interventions. In Tanzania, AGYW account for the largest proportion of new infections and have a higher risk of HIV acquisition than males of comparable age.

Methods

We used routinely collected data from the PEPFAR/USAID-funded Sauti Project, a large combination HIV prevention program, to examine the relationship between transactional sex and sex with older partners among AGYW in Tanzania (2015-2020). Out-of-school AGYW 15-24 years completed a vulnerability index and were tested for HIV. We estimated weighted prevalence ratios (PR) and 95% confidence intervals (CI) for the associations of transactional sex (sex exchanged for money/services/gifts outside of sex work) and sex with older partners (≥5-years older, ≥10-years older) with prevalent HIV. Age cutoffs of 5 and 10 years were used to align partner age differences with age-disparate and intergenerational sex, respectively. We assessed potential synergism between exposures, and subgroup analyses explored associations among girls 15-19.

Results

Sixty seven thousand three hundred fifty seven AGYW completed the vulnerability index and 14,873 had captured HIV testing records. Median age was 20 years (IQR 18-22). Transactional sex and age-disparate sex were common (35% and 28%, respectively); 13% of AGYW reported both behaviors. HIV prevalence was associated with both transactional sex (PR: 1.28; 95% CI 1.00-1.63) and age-disparate sex (PR:1.26, 95% CI 0.99-1.60). In common referent analysis, transactional sex remained strongly associated with HIV, even in the absence of age-disparate sex (PR 1.41; 95% CI 1.02-1.94).

Discussion

Evidence of statistical synergism was not present, suggesting both transactional sex and age-disparate sex operate through similar pathways to increase HIV risk. Increased specificity within HIV prevention programs is needed to better meet the sexual and reproductive health needs of AGYW at high risk of HIV in Tanzania, including investment in tailored youth-friendly strategies for AGYW who have been marginalized from the current HIV response.

Uptake and Persistent Use of HIV Preexposure Prophylaxis Among Key Populations: Results From Ukraine's Scaled National Preexposure Prophylaxis Program

BACKGROUND

Ukraine has implemented ambitious HIV-prevention programs since 1999 and began offering preexposure prophylaxis (PrEP) in 2017. Little is known about PrEP uptake and persistence in this setting.

SETTING

We analyzed data from 40 facilities providing PrEP in 11 oblasts (regions) of Ukraine between October 2020 and February 2022.

METHODS

We estimated the time between PrEP visits and conducted Kaplan-Meier analyses to estimate retention on PrEP stratified by sex, age, and key populations (KPs): men who have sex with men (MSM), people who inject drugs (PWID), sex workers (SW), discordant couples, and others vulnerable to HIV acquisition (DC/other). We used Cox regression to estimate the risk of PrEP discontinuation by KP group and sex, adjusting for age.

RESULTS

Overall, 2033 clients initiated PrEP across regions; the majority (51%) were DC/other, 22% were MSM, 22% were PWID, and 5% were SW. The overall 3-month persistence was 52.3% (95% confidence interval [CI]: 49.9% to 54.8%) and was lowest among MSM (46.7%; 95% CI: 41.9% to 52.2%) and SW (25.9%; 95% CI: 18.2% to 36.9%) (P < 0.05 for differences by KP group). After adjusting for age, PrEP discontinuation was not statistically significantly different across groups, although female PWID tended to have the lowest discontinuation risk (adjusted hazard ratio [aHR] 0.59; 95% CI: 0.31 to 1.11) while male SW tended to have the highest risk (aHR 1.87, 95% CI: 0.57 to 6.11) compared with females in the DC/other group.

CONCLUSION

Three-month PrEP persistence was low across KP groups, especially in SW. Further research examining the barriers and enablers of persistence by KPs is needed.

Determinants to Continuation on Hiv Pre-exposure Propylaxis Among Female Sex Workers at a Referral Hospital in Uganda: a Mixed Methods Study Using Com-b Model

Background

Female sex workers (FSWs) have the highest HIV prevalence in Uganda. Pre exposure prophylaxis (PrEP) has been recommended as part of the HIV combination prevention strategy, with improved patient initiation, but continuation on the service is low. We evaluated PrEP continuation among FSWs and explored potential determinants of PrEP continuation within a public referral hospital in Urban Uganda.

Methods

An explanatory sequential mixed method study was conducted at Kiruddu National referral hospital in Uganda. Secondary data on social demographic characteristics and follow up outcomes of at least one year was collected for all FSWs who were initiated PrEP between May 2020 and April 2021.We used Kaplan-Meier survival analysis to evaluate continuation on PrEP from time of initiation and follow-up period. The capability, opportunity, and motivation to change behaviour model was used to explore perspectives and practices of FSWs (n = 24) and health care providers (n = 8) on continuation on PrEP among FSWs, using semi structured interviews. The qualitative data was deductively coded and analyzed thematically, categorizing the themes related to PrEP continuation as facilitators and barriers.

Results

Of the 292 FSWs initiated on PrEP during this period, 101 (34.6) % were active on PrEP, 137 (46.9%) were lost to follow-up, 45 (15.4%) were no longer eligible to continue PrEP, eight (2.7%) were transferred out and one (0.3%) had died. Median survival time on PrEP was 15 months (Interquartile range IQR, 3-21). The continuation rates on PrEP at six (6) and 12 months were, 61.1% and 53.1%, respectively. Facilitators of PrEP continuation included awareness of risk associated with sex work, integration of PrEP with other HIV prevention services, presence of PrEP Peer support and use of Drop-in centers. The barriers included low community awareness about PrEP, high mobility of sex workers, substance abuse, and the unfavorable daytime clinic schedules.

Conclusion

Continuation on PrEP remains low among FSWs. Interventions for PrEP continuation should address barriers such as low community awareness on PrEP, substance abuse and restrictive health facility policies for scale of the PrEP program among FSWs in Uganda. Integration of PrEP with other services and scale up of community PrEP delivery structures may improve its continuation.

HIV preexposure prophylaxis and postexposure prophylaxis in women: a comprehensive guide for healthcare providers

Great disparities and inequities in the delivery and acceptance of human immunodeficiency virus (HIV) prevention exist globally among women. Various barriers, such as societal stigma, low perceived risk, relationship dynamics, and lack of education on routes of HIV transmission can cause low utilization in HIV preexposure prophylaxis (PrEP) adoption and use. In addition, socioeconomic and structural factors, such as financial burden, lack of provider knowledge and willingness to prescribe, absence of insurance coverage, and limited access to healthcare services are additional barriers to PrEP use among cisgender women. The goal of this review is to highlight current and prospective PrEP options, attitudes, and views of PrEP use among cisgender women and healthcare providers, and the role of PrEP in special populations of cisgender women.

'Condoms are hard to get by': access to HIV prevention methods during lockdown of the COVID-19 epidemic in eastern Zimbabwe

BACKGROUND

In the early phase of the coronavirus disease 2019 (COVID-19) pandemic, health services were disrupted worldwide, including HIV prevention services. While some studies have begun to document the effects of COVID-19 on HIV prevention, little has been done to qualitatively examine how lockdown measures were experienced and perceived to affect access to HIV prevention methods in sub-Saharan Africa.

OBJECTIVES

To explore how the COVID-19 pandemic was perceived to affect access to HIV prevention methods in eastern Zimbabwe.

METHOD

This article draws on qualitative data from the first three data collection points (involving telephone interviews, group discussions, and photography) of a telephone and WhatsApp-enabled digital ethnography. Data were collected from 11 adolescent girls and young women and five men over a 5-month period (March-July 2021). The data were analysed thematically.

RESULTS

Participants reported widespread interruption to their condom supply when beerhalls were shut down as part of a nationwide lockdown. Restrictions in movement meant that participants who could afford to buy condoms from larger supermarkets or pharmacies were unable to. Additionally, the police reportedly refused to issue letters granting permission to travel for the purpose of accessing HIV prevention services. The COVID-19 pandemic was also described to obstruct the demand (fear of COVID-19, movement restrictions) and supply (de-prioritised, stock-outs) for HIV prevention services. Nonetheless, under certain formal and informal circumstances, such as accessing other and more prioritised health services, or 'knowing the right people', some participants were able to access HIV prevention methods.

CONCLUSION

People at risk of HIV experienced the COVID-19 epidemic in Zimbabwe as disruptive to access to HIV prevention methods. While the disruptions were temporary, they were long enough to catalyse local responses, and to highlight the need for future pandemic response capacities to circumvent a reversal of hard-won gains in HIV prevention.

Effect of implementation strategies on pre-exposure prophylaxis persistence among female sex workers in South Africa: an interrupted time series study

BACKGROUND

A disproportionate number of new HIV infections in South Africa are among female sex workers; pre-exposure prophylaxis (PrEP) for HIV prevention is freely available to female sex workers in the country, but unique barriers challenge PrEP persistence. TB HIV Care, a large South African non-profit organisation that provides daily oral PrEP (tenofovir disoproxil fumarate and emtricitabine), has implemented multiple strategies to improve PrEP persistence. We aimed to evaluate the effect of different implementation strategies on PrEP persistence in a large-scale real-world setting.

METHODS

In this interrupted time series study, we estimated level changes in 1-month oral PrEP persistence associated with roll-out of various implementation strategies among female sex workers across nine districts in South Africa. We used routinely collected data from TB HIV Care programme files from June 7, 2016, to April 30, 2021. Poisson regression of 1-month persistence was used to assess the effect of these strategies. In secondary analyses, we tested the association between each of the strategies and 4-month persistence.

FINDINGS

The median 1-month PrEP persistence for female sex workers was 33% (IQR 27-40). SMS support and refill reminders were associated with an 11% relative increase in 1-month persistence (risk ratio [RR] 1·11, 95% CI 1·02-1·26) and clinical mentoring for PrEP providers was associated with a 127% relative increase (RR 2·27, 95% CI 1·94-2·66) among female sex workers. The loyalty rewards programme was negatively associated with 1-month persistence (RR 0·71, 95% CI 0·67-0·83). Although clinical mentoring improved 4-month persistence, SMS support text messages had no significant effect.

INTERPRETATION

Identification and subsequent use of clinical mentoring for PrEP providers and SMS support and refill reminders might improve the usefulness of PrEP overall to prevent new HIV infections among female sex workers. PrEP persistence remains an important issue, and strategies to build on our findings are needed.

FUNDING

National Institute of Mental Health and National Institute of Allergy and Infectious Diseases.

Uptake and Persistence on HIV Pre-Exposure Prophylaxis Among Female Sex Workers and Men Having Sex with Men in Kigali, Rwanda: A Retrospective Cross-Sectional Study Design

Background

Although HIV pre-exposure prophylaxis (PrEP) is known for its effectiveness in preventing HIV transmission; there is a global rise in HIV infection rates, particularly prominent in sub-Saharan Africa. This health concern is mostly evident among high-risk groups, namely Female Sex Workers (FSWs) and Men who have Sex with Men (MSMs), both of whom are more susceptible to sexually transmissible infections. This research examined the persistence, uptake, and associated predictors of PrEP utilization within the FSW and MSM populations.

Methods

A cross-sectional study design was conducted involving 4872 individuals from the FSW and MSM groups who were enrolled in a PrEP program across 10 health centers participating in a pilot initiative. The study population was subject to a year-long follow-up period commencing on March 1st, 2019. To evaluate the determinants of PrEP utilization within FSW and MSM groups, bivariate logistic analyses and multivariate logistic regression models were employed.

Results

The findings revealed that the occurrence of PrEP uptake was 45.55% (n=2219) among FSWs and 35.42% (n=17 participants) among MSM. Regarding PrEP persistence, MSM (88.24%, n=15 participants) presented higher PrEP proportion than FSWs (78.5%, n=1742 women). Our findings disclosed that individuals aged 25-34 years (aOR=0.82; 95% CI=0.72-0.93, p=0.002), 35-44 years (aOR=0.83; 95% CI=0.71-0.97, p=0.017), and 55 years and older (OR=0.14; 95% CI=0.04-0.48, p=0.002) exhibited lower likelihoods of having low PrEP uptake than those aged 15-19 years. Moreover, individuals residing with their families (aOR=0.71; 95% CI=0.58-0.87, p<0.001), living with roommates (aOR=0.7; 95% CI=0.5-0.97, p=0.032) displayed lower odds for experiencing low PrEP uptake than their counterparts living alone.

Conclusion

This study highlighted the low uptake of PrEP among participants when compared to previous studies. These results revealed significant influences of age and living conditions on PrEP usage.

Struggling, Forgotten, and Under Pressure: A Scoping Review of Experiences of Sex Workers During the COVID-19 Pandemic

The COVID-19 pandemic profoundly affected physical, mental, and economic well-being across the globe and has disproportionately affected certain vulnerable groups. This paper provides a scoping review of literature on the impact of the COVID-19 pandemic on sex workers, published between December 2019 and December 2022. Six databases were systematically searched, identifying 1009 citations; 63 studies were included in the review. Thematic analysis revealed eight main themes: financial issues; exposure to harm; alternate ways of working; COVID-19 knowledge, protective behaviors, fear, and risk; well-being, mental health, and coping; access to support; access to health care; and the impact of COVID-19 on research with sex workers. COVID-associated restrictions led to reduced work and income, leaving many sex workers struggling to cover basic needs; additionally, government protections excluded those working in the informal economy. Fearing the loss of their already reduced number of clients, many felt compelled to compromise both prices and protective measures. Although some engaged in online sex work, this raised concerns about visibility and was impossible for those without technological access or skills. Many feared COVID-19, but felt pressure to continue working, often with clients who refused to wear masks or share exposure history. Other negative impacts on well-being related to the pandemic included reduced access to financial support or health care. Marginalized populations (and especially those in professions which require close contact like sex workers) need further support and capacity-building within the community to recover from the impact of COVID-19.

Impact and cost-effectiveness of the national scale-up of HIV pre-exposure prophylaxis among female sex workers in South Africa: a modelling analysis

INTRODUCTION

In 2016, South Africa (SA) initiated a national programme to scale-up pre-exposure prophylaxis (PrEP) among female sex workers (FSWs), with ∼20,000 PrEP initiations among FSWs (∼14% of FSW) by 2020. We evaluated the impact and cost-effectiveness of this programme, including future scale-up scenarios and the potential detrimental impact of the COVID-19 pandemic.

METHODS

A compartmental HIV transmission model for SA was adapted to include PrEP. Using estimates on self-reported PrEP adherence from a national study of FSW (67.7%) and the Treatment and Prevention for FSWs (TAPS) PrEP demonstration study in SA (80.8%), we down-adjusted TAPS estimates for the proportion of FSWs with detectable drug levels (adjusted range: 38.0-70.4%). The model stratified FSW by low (undetectable drug; 0% efficacy) and high adherence (detectable drug; 79.9%; 95% CI: 67.2-87.6% efficacy). FSWs can transition between adherence levels, with lower loss-to-follow-up among highly adherent FSWs (aHR: 0.58; 95% CI: 0.40-0.85; TAPS data). The model was calibrated to monthly data on the national scale-up of PrEP among FSWs over 2016-2020, including reductions in PrEP initiations during 2020. The model projected the impact of the current programme (2016-2020) and the future impact (2021-2040) at current coverage or if initiation and/or retention are doubled. Using published cost data, we assessed the cost-effectiveness (healthcare provider perspective; 3% discount rate; time horizon 2016-2040) of the current PrEP provision.

RESULTS

Calibrated to national data, model projections suggest that 2.1% of HIV-negative FSWs were currently on PrEP in 2020, with PrEP preventing 0.45% (95% credibility interval, 0.35-0.57%) of HIV infections among FSWs over 2016-2020 or 605 (444-840) infections overall. Reductions in PrEP initiations in 2020 possibly reduced infections averted by 18.57% (13.99-23.29). PrEP is cost-saving, with $1.42 (1.03-1.99) of ART costs saved per dollar spent on PrEP. Going forward, existing coverage of PrEP will avert 5,635 (3,572-9,036) infections by 2040. However, if PrEP initiation and retention doubles, then PrEP coverage increases to 9.9% (8.7-11.6%) and impact increases 4.3 times with 24,114 (15,308-38,107) infections averted by 2040.

CONCLUSIONS

Our findings advocate for the expansion of PrEP to FSWs throughout SA to maximize its impact. This should include strategies to optimize retention and should target women in contact with FSW services.

Characterizing the Impact of the COVID-19 Pandemic on HIV PrEP care: A Review and Synthesis of the Literature

The global COVID-19 pandemic and associated lockdown measures have caused disruptions to sexual health services and created additional barriers to the continuity of HIV pre-exposure prophylaxis (PrEP) among key populations. This review provides an examination of the influences of the pandemic on engagement in the PrEP care continuum. Using the PRISMA guideline, 46 studies were included in this review and the synthesis. Most of the studies were conducted in high-income settings through quantitative analysis. A majority of studies examining the changes in PrEP use suggested a decline or discontinuation in PrEP uptake during the pandemic. The most common reasons for stopping using PrEP were perceived barriers to PrEP-related care, having reduced sexual behaviors and fewer sexual partners, and reduced perceived risk of HIV infection. Limited studies documenting an increase in PrEP uptake were all in specific PrEP optimizing programs. During the pandemic, there is also an emerging trend of switching to on-demand PrEP from daily oral PrEP. Future studies should understand the mechanism of strategies that facilitated the improvements during the pandemic. PrEP implementation programs should consider alternative PrEP modalities and provide consistent and comprehensive knowledge about correct information.

Continued attendance in a PrEP program despite low adherence and non-protective drug levels among adolescent girls and young women in Kenya: Results from a prospective cohort study

BACKGROUND

In sub-Saharan Africa (SSA), adolescent girls and young women (AGYW) ages 15 to 24 years represent <10% of the population yet account for 1 in 5 new HIV infections. Although oral pre-exposure prophylaxis (PrEP) with tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) can be highly effective, low persistence in PrEP programs and poor adherence have limited its ability to reduce HIV incidence among women.

METHODS AND FINDINGS

A total of 336 AGYW participating in the PEPFAR-funded DREAMS PrEP program in western Kenya were enrolled into a study of PrEP use conducted between 6/2019 to 1/2020. AGYW, who used daily oral TDF/FTC, completed interviews and provided dried blood spots (DBS) for measurement of tenofovir-diphosphate (TFV-DP) concentrations at enrollment and 3 months later, and 176/302 (58.3%, 95% confidence interval [95% CI 52.3 to 63.8]) met our definition of PrEP persistence: having expressed intention to use PrEP and attended both the second interview and an interim refill visit. Among AGYW with DBS taken at the second interview, only 9/197 (4.6%, [95% CI 1.6 to 7.5]) had protective TFV-DP levels (≥700 fmol/punch) and 163/197 (82.7%, [95% CI 77.5 to 88]) had levels consistent with no recent PrEP use (<10 fmol/punch). Perception of being at moderate-to-high risk for HIV if not taking PrEP was associated with persistence (adjusted odds ratio, 10.17 [95% CI 5.14 to 20.13], p < 0.001) in a model accounting for county of residence and variables that had p-value <0.1 in unadjusted analysis (age, being in school, initiated PrEP 2 to 3 months before the first interview, still active in DREAMS, having children, having multiple sex partners, partner aware of PrEP use, partner very supportive of PrEP use, partner has other partners, AGYW believes that a partner puts her at risk, male condom use, injectable contraceptive use, and implant contraceptive use). Among AGYW who reported continuing PrEP, >90% indicated they were using PrEP to prevent HIV, although almost all had non-protective TFV-DP levels. Limitations included short study duration and inclusion of only DREAMS participants.

CONCLUSIONS

Many AGYW persisted in the PrEP program without taking PrEP frequently enough to receive benefit. Notably, AGYW who persisted had a higher self-perceived risk of HIV infection. These AGYW may be optimal candidates for long-acting PrEP.