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Johnson LF, Myer L, Jamieson L, Meyer-Rath G, Delany-Moretlwe S, Joseph Davey D. The potential benefits of long-acting injectable cabotegravir in pregnant and breastfeeding women and their infants. AIDS 2024; 38:589-594. [PMID: 38016171 PMCID: PMC10906189 DOI: 10.1097/qad.0000000000003803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND Pregnant and breastfeeding women (PBW) in sub-Saharan Africa have high HIV incidence rates and associated risk of vertical transmission to their infants. Oral preexposure prophylaxis (PrEP) and injectable PrEP (long-acting cabotegravir, or CAB-LA) can potentially reduce this HIV transmission, but population-level impacts are uncertain. METHODS We extended a previously developed model of HIV and PrEP in South Africa to allow for variable PrEP duration and preference in PBW. We considered three potential scenarios for PrEP provision to PBW: oral PrEP only, CAB-LA only, and allowing oral/CAB-LA choice, with uptake and retention assumptions informed by South African data, each compared with a 'base' scenario without PrEP for PBW. RESULTS Without PrEP for PBW, the model estimates 1.31 million new infections will occur between 2025 and 2035 in South African adults and children, including 100 000 in PBW, 16 800 in infants at/before birth, and 35 200 in children through breastmilk. In the oral PrEP-only scenario, these numbers would reduce by 1.2% (95% CI: 0.7-1.7%), 8.6% (4.8-12.9%), 4.0% (2.1-5.8%), and 5.3% (3.0-8.2%) respectively. In the CAB-LA-only scenario, the corresponding reductions would be 6.1% (2.9-9.6%), 41.2% (19.8-65.0%), 12.6% (6.0-19.4%), and 29.5% (13.9-46.8%), respectively, and in the oral/CAB-LA choice scenario, similar reductions would be achieved [5.6% (3.4-8.0%), 39% (23.4-55.9%), 12.4% (7.4-16.8%) and 27.6% (16.5-39.9%) respectively]. CONCLUSION CAB-LA has the potential to be substantially more effective than oral PrEP in preventing HIV acquisition in PBW and vertical transmission, and can also modestly reduce HIV incidence at a population level.
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Affiliation(s)
| | - Landon Myer
- Division of Epidemiology and Biostatistics, School of Public Health, University of Cape Town, Cape Town
| | - Lise Jamieson
- Health Economics and Epidemiology Research Office, University of Witwatersrand, Johannesburg, South Africa
- Department of Medical Microbiology, Amsterdam University Medical Centre, Amsterdam, Netherlands
- The South African Department of Science and Innovation/National Research Foundation Centre of Excellence in Epidemiological Modelling and Analysis (SACEMA), Stellenbosch University, Stellenbosch, South Africa
| | - Gesine Meyer-Rath
- Health Economics and Epidemiology Research Office, University of Witwatersrand, Johannesburg, South Africa
- The South African Department of Science and Innovation/National Research Foundation Centre of Excellence in Epidemiological Modelling and Analysis (SACEMA), Stellenbosch University, Stellenbosch, South Africa
- Department of Global Health, Boston University, Boston, MA, USA
| | | | - Dvora Joseph Davey
- Division of Epidemiology and Biostatistics, School of Public Health, University of Cape Town, Cape Town
- Division of Infectious Diseases, Geffen School of Medicine, University of California Los Angeles, Los Angeles CA, USA
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Miller AP, Dean SS, Court L, Mvududu R, Mashele N, Wara NJ, Myer L, Shoptaw S, Davey DLJ. "So that's why I found PrEP to be safest way to protect yourself": exploring IPV experiences and impact on HIV prevention among pregnant and postpartum women in Cape Town, South Africa. BMC Public Health 2024; 24:481. [PMID: 38360616 PMCID: PMC10870618 DOI: 10.1186/s12889-024-17871-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 01/24/2024] [Indexed: 02/17/2024] Open
Abstract
Intimate partner violence (IPV) occurs at alarmingly high rates towards pregnant women in South Africa. Experiences of emotional, physical, and sexual IPV in pregnancy can adversely impact the health and safety of mother and fetus. Furthermore, IPV is associated with increased risk of HIV, exacerbating the public health impact of violence among pregnant women in this HIV endemic setting. In-depth understanding of cultural and contextual drivers of experiences of IPV is a critical precursor to development of interventions effectively addressing this issue among pregnant women in South Africa. The present study examines factors contributing to IPV among pregnant women to identify potential points of intervention. We conducted twenty in-depth interviews with postpartum women who used oral pre-exposure prophylaxis (PrEP) in pregnancy and reported recent experiences of IPV and/or ongoing alcohol use in a township near Cape Town, South Africa that experiences a heavy burden of both HIV and IPV. Interpretive thematic analysis was used. Several patterns of IPV during pregnancy were identified and violence was frequently described as co-occurring with male partner alcohol use. A majority of women referenced oral PrEP as their preferred method for HIV prevention, highlighting the agency and discretion it provided as beneficial attributes for women experiencing IPV. Fear of judgement from peers for remaining with an abusive partner and a lack of clear community messaging around IPV were identified as barriers to disclosure and support-seeking. Addressing the lack of social support received by women experiencing IPV during pregnancy in South Africa is essential to comprehensive IPV programming.
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Affiliation(s)
- Amanda P Miller
- Division of Epidemiology and Biostatistics, School of Public Health, San Diego State University, San Diego, CA, USA.
| | - Sarah Schoetz Dean
- Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Lara Court
- Division of Socio-behavioural Sciences, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Rufaro Mvududu
- Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Nyiko Mashele
- Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Nafisa J Wara
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Landon Myer
- Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Steven Shoptaw
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Dvora L Joseph Davey
- Division of Infectious Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA, USA
- Division of Epidemiology and Biostatistics, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
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Chi BH, Saidi F, Graybill LA, Phanga T, Mollan KR, Amico KR, Freeborn K, Rosenberg NE, Hill LM, Hamoonga T, Richardson B, Kalua T, Phiri S, Mutale W. A Patient-Centered, Combination Intervention to Support Adherence to HIV Pre-exposure Prophylaxis During Pregnancy and Breastfeeding: A Randomized Pilot Study in Malawi. J Acquir Immune Defic Syndr 2024; 95:42-51. [PMID: 37757844 PMCID: PMC10873086 DOI: 10.1097/qai.0000000000003309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 07/05/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Daily oral pre-exposure prophylaxis (PrEP) can reduce HIV incidence in pregnant and breastfeeding women, but adherence is essential. METHODS We conducted a pilot randomized trial to evaluate an intervention package to enhance antenatal and postnatal PrEP use in Lilongwe, Malawi. The intervention was based on patient-centered counseling adapted from previous PrEP studies, with the option of a participant-selected adherence supporter. Participants were locally eligible for PrEP and randomized 1:1 to intervention or standard counseling (ie, control) and followed for 6 months. Participants received the intervention package or standard counseling at enrollment, 1, 3, and 6 months. Adherence was measured through plasma and intracellular tenofovir concentrations and scored using a published algorithm. Our primary outcome was retention in care with concentrations consistent with 4-7 doses/week. RESULTS From June to November 2020, we enrolled 200 pregnant women with the median gestational age of 26 (interquartile range: 19-33) weeks. Study retention was high at 3 months (89.5%) and 6 months (85.5%). By contrast, across the 2 time points, 32.8% of participants retained in the study had adherence scores consistent with 2-5 doses/week while 10.3% had scores consistent with daily dosing. For the composite primary end point, no substantial differences were observed between the intervention and control groups at 3 months (28.3% vs. 29.0%, probability difference: -0.7%, 95% confidence interval: -13.3%, 11.8%) or at 6 months (22.0% vs. 26.3%, probability difference: -4.3%, 95% confidence interval: -16.1%, 7.6%). CONCLUSIONS In this randomized trial of PrEP adherence support, retention was high, but less than one-third of participants had pharmacologically confirmed adherence of ≥4 doses/week. Future research should focus on antenatal and postnatal HIV prevention needs and their alignment across the PrEP continuum, including uptake, persistence, and adherence.
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Affiliation(s)
- Benjamin H Chi
- Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | | | - Lauren A Graybill
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | | | - Katie R Mollan
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC
- UNC Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - K Rivet Amico
- Department of Health Behavior and Health Education, University of Michigan, Ann Arbor, MI
| | - Kellie Freeborn
- Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Nora E Rosenberg
- Department of Health Behavior, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Lauren M Hill
- Department of Health Behavior, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Twaambo Hamoonga
- Department of Population Studies and Global Health, University of Zambia, Lusaka, Zambia
| | - Brian Richardson
- UNC Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Thokozani Kalua
- Center for International Health, Education, and Biosecurity, Lilongwe, Malawi
| | - Sam Phiri
- Partners in Hope, Lilongwe, Malawi; and
| | - Wilbroad Mutale
- Department of Health Policy and Systems, University of Zambia, Lusaka, Zambia
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Lichtwarck HO, Mbotwa CH, Kazaura MR, Moen K, Mmbaga EJ. Early disengagement from HIV pre-exposure prophylaxis services and associated factors among female sex workers in Dar es Salaam, Tanzania: a socioecological approach. BMJ Glob Health 2023; 8:e013662. [PMID: 38154811 PMCID: PMC10759139 DOI: 10.1136/bmjgh-2023-013662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 11/25/2023] [Indexed: 12/30/2023] Open
Abstract
INTRODUCTION Pre-exposure prophylaxis (PrEP) is an effective HIV prevention tool when taken as prescribed. However, suboptimal use may challenge its real-life impact. To support female sex workers in their efforts to prevent themselves from HIV, it is essential to identify factors that contribute to early disengagement from PrEP care. In this study, we aimed to estimate the risk of early disengagement from PrEP services among female sex workers in Tanzania and associated factors using a socioecological model as a guiding framework. METHODS The study was conducted as part of a pragmatic mHealth trial for PrEP roll-out in Dar es Salaam in 2021. We estimated the risk of early disengagement, defined as not presenting for the first follow-up visit (within 56 days of enrolment), and its associations with individual, social, behavioural and structural factors (age, self-perceived HIV risk, mental distress, harmful alcohol use, condom use, number of sex work clients, female sex worker stigma and mobility) using multivariable logistic regression models, with marginal standardisation to obtain adjusted relative risks (aRR). RESULTS Of the 470 female sex workers enrolled in the study, 340 (74.6%) did not attend the first follow-up visit (disengaged). Mental distress (aRR=1.14; 95% CI 1.01 to 1.27) was associated with increased risk of disengagement. Participants who reported a higher number of clients per month (10-29 partners: aRR=0.87; 95% CI 0.76 to 0.98 and ≥30 partners: aRR=0.80; 95% CI 0.68 to 0.91) and older participants (≥35 years) (RR=0.75; 95% CI 0.56 to 0.95) had a lower risk of disengagement. CONCLUSIONS AND RECOMMENDATIONS Early disengagement with the PrEP programme was high. Mental distress, younger age and having fewer clients were risk factors for disengagement. We argue that PrEP programmes could benefit from including mental health screening and treatment, as well as directing attention to younger sex workers and those reporting fewer clients.
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Affiliation(s)
- Hanne Ochieng Lichtwarck
- Department of Community Medicine and Global Health, University of Oslo, Faculty of Medicine, Oslo, Norway
| | - Christopher Hariri Mbotwa
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
- University of Dar es Salaam, Mbeya College of Health and Allied Sciences, Mbeya, Tanzania
| | | | - Kåre Moen
- Department of Community Medicine and Global Health, University of Oslo, Faculty of Medicine, Oslo, Norway
| | - Elia John Mmbaga
- Department of Community Medicine and Global Health, University of Oslo, Faculty of Medicine, Oslo, Norway
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
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Masenyetse LJ, Greenberg L, Samonyane F, Sekepe B, Mokone M, Mokone MJ, Tukei VJ, Beres LK. Oral HIV pre-exposure prophylaxis use among pregnant and postpartum women: results from real-world implementation in Lesotho. FRONTIERS IN REPRODUCTIVE HEALTH 2023; 5:1221752. [PMID: 37583546 PMCID: PMC10425268 DOI: 10.3389/frph.2023.1221752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/07/2023] [Indexed: 08/17/2023] Open
Abstract
Introduction Lesotho has reached epidemic control, PrEP is an important component in maintaining that and in reaching the goal of eliminating mother-to-child transmission. Methods We conducted a retrospective review of existing, routine PrEP health records in 26 health facilities in Lesotho. PrEP visit data were collected for pregnant and postpartum women screened for PrEP and/or enrolled in PrEP programs from 1 January 2019 through 30 June 2021 with follow-up data collected up to the date of data abstraction per site between October 2021 and May 2022. Poisson regression with robust variance was used to evaluate the association between patient characteristics and continuation of PrEP. Results Indications for starting PrEP were significantly associated with continuation in PrEP use. Women starting PrEP due to having a partner known to be living with HIV were the most likely to return for follow-up. In all age groups, the most common reason for starting PrEP was being in a serodiscordant relationship, though the proportion varies by age. Conclusion As Lesotho is now in the process of optimizing PrEP use among pregnant and postpartum women, it is critical to revise data sources to capture information that will link PrEP records and ANC/PNC records and document pregnancy/postpartum status in order to better understand PrEP use and gaps in this population.
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Affiliation(s)
| | - Lauren Greenberg
- Elizabeth Glaser Pediatric AIDS Foundation, Washington, DC, United States
| | | | - Bokang Sekepe
- Elizabeth Glaser Pediatric AIDS Foundation, Maseru, Lesotho
| | | | | | - Vincent J. Tukei
- Elizabeth Glaser Pediatric AIDS Foundation, Maseru, Lesotho
- Elizabeth Glaser Pediatric AIDS Foundation, Mbabane, Eswatini
| | - Laura K. Beres
- Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
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