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"Hosek, Sybil"
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PrEP uptake, persistence, adherence, and effect of retrospective drug level feedback on PrEP adherence among young women in southern Africa: Results from HPTN 082, a randomized controlled trial
by
Wilson, Ethan
,
Mukaka, Shorai
,
Tsholwana, Mandisa
in
Antigens
,
Antiretroviral drugs
,
Behavior
2021
Pre-exposure prophylaxis (PrEP) is highly effective and an important prevention tool for African adolescent girls and young women (AGYW), but adherence and persistence are challenging. PrEP adherence support strategies for African AGYW were studied in an implementation study. HIV Prevention Trials Network (HPTN) 082 was conducted in Cape Town, Johannesburg (South Africa) and Harare (Zimbabwe) from October 2016 to October 2018 to evaluate PrEP uptake, persistence, and the effect of drug level feedback on adherence. Sexually active HIV-negative women ages 16-25 were offered PrEP and followed for 12 months; women who accepted PrEP were randomized to standard adherence support (counseling, 2-way SMS, and adherence clubs) or enhanced adherence support with adherence feedback from intracellular tenofovir-diphosphate (TFV-DP) levels in dried blood spots (DBS). PrEP uptake, persistence through 12 months (no PrEP hold or missed visits), and adherence were assessed. The primary outcome was high adherence (TFV-DP [greater than or equal to]700 fmol/punch) at 6 months, compared by study arm. Of 451 women enrolled, median age was 21 years, and 39% had curable sexually transmitted infections (STIs). Most (95%) started PrEP, of whom 55% had uninterrupted PrEP refills through 12 months. Of those with DBS, 84% had detectable TFV-DP levels at month 3, 57% at month 6, and 31% at month 12. At 6 months, 36/179 (21%) of AGYW in the enhanced arm had high adherence and 40/184 (22%) in the standard adherence support arm (adjusted odds ratio [OR] of 0.92; 95% confidence interval [CI] 0.55, 1.34; p = 0.76). Four women acquired HIV (incidence 1.0/100 person-years), with low or undetectable TFV-DP levels at or prior to seroconversion, and none of whom had tenofovir or emtricitabine resistance mutations. The study had limited power to detect a modest effect of drug level feedback on adherence, and there was limited awareness of PrEP at the time the study was conducted. In this study, PrEP initiation was high, over half of study participants persisted with PrEP through month 12, and the majority of young African women had detectable TFV-DP levels through month 6 with one-fifth having high adherence. Drug level feedback in the first 3 months of PrEP use did not increase the proportion with high adherence at month 6. HIV incidence was 1% in this cohort with 39% prevalence of curable STIs and moderate PrEP adherence. Strategies to support PrEP use and less adherence-dependent formulations are needed for this population.
Journal Article
Uptake of pre-exposure prophylaxis, sexual practices, and HIV incidence in men and transgender women who have sex with men: a cohort study
by
Montoya, Orlando
,
Chariyalertsak, Suwat
,
Casapia, Martin
in
Adolescent
,
Adult
,
Anti-HIV Agents - blood
2014
The effect of HIV pre-exposure prophylaxis (PrEP) depends on uptake, adherence, and sexual practices. We aimed to assess these factors in a cohort of HIV-negative people at risk of infection.
In our cohort study, men and transgender women who have sex with men previously enrolled in PrEP trials (ATN 082, iPrEx, and US Safety Study) were enrolled in a 72 week open-label extension. We measured drug concentrations in plasma and dried blood spots in seroconverters and a random sample of seronegative participants. We assessed PrEP uptake, adherence, sexual practices, and HIV incidence. Statistical methods included Poisson models, comparison of proportions, and generalised estimating equations.
We enrolled 1603 HIV-negative people, of whom 1225 (76%) received PrEP. Uptake was higher among those reporting condomless receptive anal intercourse (416/519 [81%] vs 809/1084 [75%], p=0·003) and having serological evidence of herpes (612/791 [77%] vs 613/812 [75%] p=0·03). Of those receiving PrEP, HIV incidence was 1·8 infections per 100 person-years, compared with 2·6 infections per 100 person-years in those who concurrently did not choose PrEP (HR 0·51, 95% CI 0·26–1·01, adjusted for sexual behaviours), and 3·9 infections per 100 person-years in the placebo group of the previous randomised phase (HR 0·49, 95% CI 0·31–0·77). Among those receiving PrEP, HIV incidence was 4·7 infections per 100 person-years if drug was not detected in dried blood spots, 2·3 infections per 100 person-years if drug concentrations suggested use of fewer than two tablets per week, 0·6 per 100 person-years for use of two to three tablets per week, and 0·0 per 100 person-years for use of four or more tablets per week (p<0·0001). PrEP drug concentrations were higher among people of older age, with more schooling, who reported non-condom receptive anal intercourse, who had more sexual partners, and who had a history of syphilis or herpes.
PrEP uptake was high when made available free of charge by experienced providers. The effect of PrEP is increased by greater uptake and adherence during periods of higher risk. Drug concentrations in dried blood spots are strongly correlated with protective benefit.
US National Institutes of Health.
Journal Article
Comparison of Measures of Adherence to Human Immunodeficiency Virus Preexposure Prophylaxis Among Adolescent and Young Men Who Have Sex With Men in the United States
by
Horng, Howard
,
Benet, Leslie Z
,
Saberi, Parya
in
Adolescent
,
and Commentaries
,
Anti-HIV Agents - administration & dosage
2018
Young men-who-have-sex-with-men (MSM) are disproportionately impacted by human immunodeficiency virus (HIV). Preexposure prophylaxis (PrEP) could reduce HIV acquisition among youth, but suboptimal adherence threatens effectiveness. Optimal metrics of PrEP adherence among adolescents have remain undefined.
The Adolescent Trials Network 110/113 studies provided daily oral PrEP with tenofovir (TFV) disoproxil fumarate/emtricitabine over 48 weeks to a diverse population of MSM (aged 15-22 years). Self-reported adherence was assessed and PrEP drug concentrations measured from hair and dried blood spot (DBS) samples; 23% of participants received Wisepill electronic monitoring devices. The average number of PrEP doses per week taken was estimated, and concordance between measures assessed.
Among 243 participants, hair samples were collected at 1186/1238 (96%) person-visits. The concordance of TFV levels in hair and TFV-diphosphate in DBS around thresholds consistent with taking ≥4 and 7 PrEP doses/week was high (76% and 80%). Hair and DBS concentrations correlated poorly with self-report and Wisepill metrics. Through week 12, 40%-60% of participants (by hair and DBS), ≤31% (Wisepill), and >85% (self-report) were estimated to have taken ≥4 PrEP doses/week (a threshold associated with protection among MSM). For all measures except self-report, adherence declined over time, with half of participants taking <2 doses/week by week 48.
Among youth on PrEP, adherence waned over time. Self-report overestimated adherence, and use of Wisepill was limited. Hair collection was highly acceptable and provided similar interpretations to DBS. Incorporation of either metric in future PrEP studies among youth could identify suboptimal adherence and trigger interventions.
Journal Article
What will it take to bring LAED medication regimens to young people?
by
Hosek, Sybil
,
Stranix‐Chibanda, Lynda
in
Acquired immune deficiency syndrome
,
Adolescents
,
AIDS
2023
Compared to all populations living with HIV, adolescents aged 13–24 are the age group most likely to not know their status or access antiretroviral treatment (ART), have higher levels of skipped medication doses and missed medical visits, and demonstrate the lowest rates of viral suppression even in the context of widespread access to ART [2, 3]. Adolescent sexual activity remains taboo in some communities, affecting service providers’ attitudes towards providing sexual and reproductive health services, including PrEP, to sexually active adolescents. [...]attacks on the autonomy of medical providers in countries like the United States to make decisions with their patients around sexual and reproductive health threaten to upend HIV prevention progress among key populations. Gesesew HA, Tesfay Gebremedhin AT, Demissie TD, Kerie MW, Sudhakar M, Mwanri L. Significant association between perceived HIV‐related stigma and late presentation for HIV/AIDS care in low and middle‐income countries: a systematic review and meta‐analysis.
Journal Article
Predictors of Mpox vaccine uptake among sexual and gender minority young adults living in Illinois: Unvaccinated vs. double vs. single dose vaccine recipients
by
Hosek, Sybil G.
,
Felt, Dylan
,
Rodriguez-Ortiz, Anthony E.
in
Allergy and Immunology
,
COVID-19 vaccines
,
Cross-Sectional Studies
2023
•Approximately 50 % of SGMs in this study received at least their first dose of the Mpox vaccine.•Only one-quarter of participants completed the recommended 2-dose Mpox vaccine regimen.•Secondary exposure to Mpox or viewing Mpox as an identity-based disease was positively associated with being a double-doser.•Food insecurity or fearing rejection due to perceived Mpox acquisition were positively associated with being unvaccinated.
The 2022 global outbreak of Monkeypox virus (Mpox), which has primarily spread through the sexual networks of sexual and gender minority (SGM) individuals, has introduced new public health challenges. While an efficacious Mpox vaccine is in active circulation, few Mpox vaccine studies have examined its uptake among SGM groups. The aims of this study were to investigate (a) the prevalence of Mpox vaccine uptake among SGM and (b) the contextual, Mpox-disease specific, and Mpox-vaccine specific factors associated with Mpox vaccine among SGM.
We conducted a cross-sectional survey in Illinois, USA in September 2022; 320 young SGM completed self-administered questionnaires. Multinomial logistic regression was used to assess the contextual, Mpox-disease specific, and Mpox-vaccine specific factors associated with Mpox vaccine uptake. Adjusted Odds Ratios (aORs) and 95 % Confidence Intervals (CI) are reported.
Approximately 50 % of the SGM participants included in this study had received at least their first dose of the Mpox vaccine. Multinomial regression analysis showed that individuals who had recently experienced food insecurity, had higher degrees of fear of social rejection due to Mpox acquisition, and were more Mpox-vaccine hesitant were more likely to be unvaccinated. Conversely, knowing people who have contracted Mpox, having higher formal educational attainment, having higher degrees of Mpox-related internalized heterosexism, and being more concerned about one’s safety regarding Mpox morbidity were more likely to be double-dosers.
Approximately 50 % of the SGMs included in this study received at least their first dose of the Mpox vaccine; however, only one-quarter of participants completed the recommended 2-dose Mpox regimen. Our findings indicate that socioeconomic stability, fear of social rejection due to disease acquisition, and Mpox-specific vaccine hesitancy may be important structural targets to consider when developing vaccine-uptake prevention and intervention strategies tailored to the needs of sexual and gender minorities.
Journal Article
Individual and structural-level Correlates of Pre-exposure Prophylaxis (PrEP) lifetime and current use in a nationwide sample of young sexual and gender minorities
by
Fitch, Calvin
,
Serrano, Pedro A
,
Hosek, Sybil G
in
Antiretroviral drugs
,
Bisexuality
,
Cisgender
2022
The objective of this analysis was to describe individual and structural-level factors associated with pre-exposure prophylaxis (PrEP) use among a sample of sexual and gender minorities (SGM) at risk for HIV recruited using limited interaction strategies. SGM (N = 3330), ages 15–34, without HIV enrolled in a nationwide limited interaction cohort study from 2017 to 2020. A baseline cross-sectional single-survey design examined individual and structural-level correlates of PrEP lifetime use and current use using logistic regression. PrEP lifetime use and current use were reported by 31.2% and 23.9%, respectively, of SGM with PrEP data (n = 3077). PrEP use outcomes (lifetime or current use) in cisgender MSM were associated with being over age 18, Black or other race, Hispanic/Latina/x/o ethnicity, being gay, being out to one’s healthcare provider, having health insurance, being a college graduate, and having a greater number of PrEP peers. PrEP use outcomes (lifetime use or current use) in transgender/non-binary participants were associated with being over age 24, being Latinx, being transgender vs. non-binary, being assigned male at birth, being out to their healthcare provider, living in the western or northeastern United States, and having more peers on PrEP. More work is needed to address lower PrEP uptake in SGM under 18 and those whose sex risk may be more dynamic (e.g., non-binary, pansexual/queer, and bisexual SGM) and such strategies should consider utilizing peers to provide information and ameliorate structural barriers.
Journal Article
Debrief Reports to Expedite the Impact of Qualitative Research: Do They Accurately Capture Data from In-depth Interviews?
by
Hosek, Sybil G
,
Beima-Sofie, Kristin
,
Johnson, Mallory O
in
Accuracy
,
Discrepancies
,
Human immunodeficiency virus
2019
“Debrief reports” (DRs) use structured forms to capture key concepts from in-depth interviews and focus group discussions. They are completed by interviewers and rapidly disseminated to key team members to facilitate identification of potential problems with study procedures, recruitment, or participant engagement and to inform critical adjustments, which can be especially pertinent in intervention studies. Their reliability and validity have yet to be formally evaluated. To assess the accuracy of DRs in capturing key content, raters analyzed a random sub-sample of 20 pairs of de-identified transcripts and their linked DRs from the VOICE-D trial. Analyses generally supported the accuracy of DRs; however, pertinent information from transcripts was occasionally missed or recorded with discrepancies or lack of detail. Longer transcripts and DR sections describing complex topic areas were more likely to involve discrepancies. Recommendations are offered for further research and optimizing the use of DRs.
Journal Article
A hybrid effectiveness implementation trial testing an HIV and STI prevention program for mother figures and their adolescent girls and young women delivered by peer leaders: ZAIMARA study protocol
by
Kasengele, Chowa Tembo
,
Mweemba, Mable
,
Chhun, Nok
in
Adolescent
,
Adolescent girls and young women
,
Adolescents
2025
Background
Zambia is struggling to meet the 95-95-95 targets established by the Joint United Nations Programme on HIV/AIDS for adolescent girls and young women (AGYW), and HIV incidence remains high. The Zambian government has declared adolescent HIV prevention and sexual health as priorities, but new strategies are needed to facilitate HIV testing uptake among AGYW. Mother figures (MF), who are the center of Zambian families, may hold the key. The excessive burden on the healthcare workforce has impeded the implementation of effective HIV prevention programs. To sustain effective programs, implementation strategies are needed that reduce worker burnout and improve job satisfaction and employee retention. Task shifting to peer leader intervention delivery and attention to healthcare worker stress has the potential to strengthen and sustain program delivery. This study will test an intervention called ZAIMARA for AGYW and MF to improve HIV testing uptake and evaluate implementation outcomes when delivered by peer leaders.
Methods
This 2-arm individually randomized hybrid effectiveness-implementation trial will compare ZAIMARA to a health promotion (HP) program across five sites in Lusaka. We will enroll up to 650 dyads comprised of 15-19-year-old Zambian AGYW and their MF. Peer leaders randomized and trained to deliver ZAIMARA or HP will receive mental health distress screening and referral versus nutrition and exercise screening. AGYW-MF dyads will participate in a 2-day group workshop and complete 6-, 12-, 18-, and 24-month assessments. Peer leaders will complete 6- and 12-month assessments. Primary outcomes are HIV-testing uptake for AGYW and job retention for peer leaders at 6-months. Secondary outcomes include incident sexually transmitted infections, including HIV, uptake of pre-exposure prophylaxis, and safer sexual behavior at 12-, 18-, and 24-months. We will evaluate implementation outcomes and intervention costs.
Discussion
This study is poised to add a novel approach to HIV prevention among AGYW in Zambia and inform implementation considerations. ZAIMARA may provide a scalable solution to improve HIV testing and prevention practices for AGYW and identify features of implementation that strengthen sustainability. Findings will inform national HIV prevention strategies in Zambia and offer insights into the broader application of family-based interventions in similar low-resource settings globally.
Trial registration
ClinicalTrials.gov, NCT06503666, Registered on 10 July 2024.
Journal Article
Baseline preferences for oral pre-exposure prophylaxis (PrEP) or dapivirine intravaginal ring for HIV prevention among adolescent girls and young women in South Africa, Uganda and Zimbabwe (MTN-034/IPM-045 study)
by
Roberts, Sarah T.
,
Siziba, Bekezela
,
Soto-Torres, Lydia
in
Acquired immune deficiency syndrome
,
Adolescent
,
Adolescents
2023
Adolescent girls and young women (AGYW) in sub-Saharan Africa are disproportionately affected by the HIV epidemic and face an array of challenges using proven behavioral and biomedical prevention methods. To address the urgent need for expanding prevention options, we evaluated the baseline preferences of HIV prevention methods among participants enrolled in the MTN-034/REACH crossover trial along with their stated product preference prior to product initiation.
AGYW aged 16-21 years were enrolled at 4 study sites: Cape Town and Johannesburg, South Africa; Kampala, Uganda; and Harare, Zimbabwe and randomly assigned to the sequence of using oral PrEP and the dapivirine ring for 6 months each, followed by a choice period in which they could choose either product (or neither) for an additional six months. Eligible AGYW were HIV-negative, not pregnant and using effective contraception for at least two months prior to enrollment. Descriptive statistics were used to summarize demographic and behavioral data while multinomial analysis was used to determine predictors of stated product preference (ring or oral PrEP).
Of the 247 AGYW enrolled in REACH, 34% were aged 16-17 and 89% had a primary partner.The median age of sexual debut was 16 years and 40% had ever been pregnant. At screening, 35% of participants were diagnosed with a sexually transmitted infection (STI), 39% had an AUDIT-C score associated with harmful drinking and 11% reported intimate partner violence in the past 6 months. Overall, 28% of participants, had CESD-10 scores suggestive of depressive symptoms (≥12) in the past week. At baseline, similar proportions stated a preference for the ring and oral PrEP (38.1% and 40.5% respectively), with 19% of participants stating they preferred both products equally. Only study site was significantly associated with product preference (P<0.05) with AGYW from Johannesburg having higher odds of preferring the ring and those from Kampala having higher odds of preferring both options equally.
We successfully enrolled African AGYW with a clear unmet need for HIV prevention. The balanced preference between the two products suggests that multiple biomedical prevention options may be appealing to this age group and could address their prevention needs.
Journal Article
Symptoms, Side Effects and Adherence in the iPrEx Open-Label Extension
by
Liu, Albert Y.
,
David, Burns
,
Guanira, Juan
in
Adult
,
Anti-HIV Agents - adverse effects
,
Antiretroviral drugs
2016
Background. Blinded clinical trials have reported a modest and transient \"start-up syndrome\" with initiation of tenofovir-based pre-exposure prophylaxis (PrEP). We evaluate this phenomenon and its effect on adherence in an open-label PrEP study. Methods. In the iPrEx open-label extension (OLE) study, an 18-month open-label, multi-site PrEP cohort taking daily oral coformulated tenofovir/emtricitabine, we examined the prevalence and duration of PrEP-associated symptoms and their effect on adherence, assessed by drug levels in dried blood spots tested monthly for the first 3 months. Results. Symptom reports peaked within the first month, with 39% reporting potentially PrEP-related symptoms compared to 22% at baseline. Symptoms largely resolved to pre-PrEP levels by 3 months. Symptoms varied substantially in frequency by study site (range in 1-month symptoms: 11% to 70%). Nongastrointestinal (GI) symptoms were not associated with adherence (odds ratio [OR] = 1.2, 95% confidence interval [CI], .4–3.7); however, GI-associated symptoms in the first 4 weeks were inversely associated with adherence at 4 weeks (OR = 0.47, 95% CI, .23–.96). Reports of GI symptoms were associated with 7% (95% CI, 4%–11%) of suboptimal adherence in this cohort. Conclusions. PrEP-associated symptoms in the open-label setting occur in a minority of users and largely resolve within 3 months. GI symptoms are associated with a modest reduction in PrEP adherence, but good adherence is possible even in the presence of frequent symptom reports. Clinical Trials Registration. Clinicaltrials.gov NCT00458393.
Journal Article