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Introduction
Skills and Expertise
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April 2014 - present
September 2008 - present
Publications
Publications (906)
Background: This article discusses the ethical issues surrounding the integration of long-ac ting injec table an-tiretroviral therapy (LA-ART) in the programmatic management of human immunodeficiency virus (HIV). As the medical landscape evolves, implementing LA-ART introduces many ethical issues that should be considered for the success of scale-u...
Background
Hepatitis B virus (HBV) infection is a significant cause of morbidity and mortality globally. The World Health Organization estimates that just 10.5% of individuals living with HBV globally are aware of their status. Antenatal care provides an opportunity to screen pregnant women for HBV and to treat those who are eligible to reduce the...
Background
We investigated awareness of neonatal infections among a population of pregnant women and other community members in Kampala, Uganda. We explored perceived causes of neonatal infections and perceptions of appropriate treatments.
Methods
We conducted focus group discussions (FGDs) and in-depth interviews (IDIs) with 97 participants: 25 c...
Background
Low- and middle-income countries lack data on culture-confirmed sepsis in HIV-exposed infants, despite the reported heightened risk of infectious morbidity. This study describes culture-confirmed sepsis and antibiotic resistance patterns among HIV-exposed children in a large etiological cohort study in Kampala, Uganda.
Methods
This was...
Background
Group B streptococcal (GBS) sepsis during infancy is a leading cause of child mortality and an important contributor to long-term neurodisability. Data on outcomes among invasive GBS infection survivors in low- and middle-income countries are limited. We present 2-year neurodevelopment and growth outcomes after GBS sepsis in Uganda.
Met...
Background
Epidemiological evidence about the etiology and antimicrobial resistance of neonatal infections remains limited in low-resource settings. We aimed to describe the etiology of neonatal infections in a prospective observational cohort study conducted at two hospital sites in Kampala, Uganda.
Methods
Babies admitted to either unit with ris...
Background
Every year an estimated 2–3 million babies are stillborn, with a high burden in Africa. Infection is an important driver of stillbirth. There is a lack of data on the bacterial causes of stillbirth in Uganda, contributing to a lack of interventions such as effective prophylaxis and development of maternal vaccine options against the most...
Background
Maternal primary cytomegalovirus (CMV) infection is associated with abortion and congenital anomalies. In Uganda, the burden of maternal CMV infection is not well studied. This study thus assessed the seroprevalence and factors associated with CMV infection among pregnant women at Kawempe National Referral Hospital in Kampala. This work...
Introduction
Maternal Group B Streptococcus (GBS) rectovaginal colonization is an important risk factor for invasive disease in neonates, yet availability of culture-based methods for detection is limited in low-resource settings. We evaluated the diagnostic performance of the HiberGene (HG) GBS loop-mediated isothermal amplification (LAMP) assay f...
Introduction
Physical Activity (PA) and its links to frailty, quality of life (QoL), and other comorbidities in older Ugandans living with HIV remain under-explored.
Methods
We analyzed data from three annual assessments of older people living with HIV (PLWH) and age- and sex-similar people not living with HIV (PnLWH). We fitted linear generalized...
Background
During the COVID-19 pandemic, social media and web-based platforms were widely used to promote medicinal substances. To assess community perspectives on drug promotions on social media, we conducted qualitative research using three workshops. The workshops aimed to highlight the public understanding of drug advertising focusing on commun...
The World Health Organization recognises Routine Health Information System (RHIS) data as integral to data-driven health systems; needed to improve intrapartum outcomes for maternal and newborn health worldwide. However, research in Bangladesh and Tanzania suggests that mode of birth affects register data accuracy, but little is known about why. To...
In the Global South children with disabilities have often been left out of research projects. A method which has the potential to increase inclusion of children with disabilities in research is participatory photography and video.
In this participatory research project 32 children with disabilities and their peers aged 8 to 14 living in Central Uga...
Supportive social relations are crucial to wellbeing as young adults transition to independence, especially when these transitions are impeded by limited employment and educational opportunities, leading to lengthy ‘waithoods’. We analysed the core support networks of 929 16-29 year-old rural South Africans finding that waithood disrupts and reconf...
Background: Hepatitis B virus (HBV) is a neglected public health threat with poor community awareness and access to prevention, despite having a safe and effective vaccine. There are still gaps in diagnosis and treatment, particularly in the World Health Organization (WHO) African region. New WHO HBV guidelines, for the first time, include the use...
Background Health research in sub-Saharan Africa takes place against a lengthy history of exploitation and unfair collaboration. This has involved the export of samples and data from the continent for the benefit of institutions and researchers elsewhere. In this paper, we report the perspectives of people involved in conducting genomics research i...
We explored why people may not reveal their antiretroviral therapy (ART) status when presenting for HIV care, and how a linked electronic system may help address this phenomenon. Data were collected from March to October 2023 from people who presented to clinics for an HIV test in KwaZulu-Natal, South Africa but found to be on ART, as well from sta...
We describe how a pilot intervention called "Lending a Hand" was implemented to mitigate some of the risks associated with migration among young recent migrants (14–24 years) in two small towns in south-western Uganda. The design of the intervention was informed by the `protection-risk framework’, with key protection components of the intervention...
Background: Spina bifida is a congenital neural tube defect, where there is incomplete formation of the spinal cord and vertebrae, resulting in abnormal development of the neural tube. This affects bladder function and urinary incontinence. Clean Intermittent Catheterization (CIC) is used to manage bladder and bowel management.Objectives: This stud...
Background
Obuntu Bulamu is a Ugandan intervention promoting inclusive education for children with disabilities. This culturally appropriate approach, based on the Ubuntu philosophy, utilises peer-to-peer support activities for children, parents and teachers.
Objectives
To effectively measure the intervention’s impact on disability inclusion, the...
There is increased awareness of the gendered impacts of outbreaks, including an exacerbation of violence against women and disruptions to essential health service delivery for women. However, there is limited understanding of women’s own experiences of deciding to use the health system after experiencing violence in settings affected by major emerg...
This qualitative sub-study investigated household practices affecting orally shed infections using Kaposi’s sarcoma-associated herpesvirus (KSHV) as a focus. Participants enrolled from 50 households in rural south-western Uganda were followed monthly up to three times. At enrolment, in-depth interviews were completed, and venous blood collected. KS...
We investigate the relationship between hope and risky behaviour and the role of migration among young people in northern KwaZulu-Natal, South Africa. We use data from a cohort of n = 5248 adolescents and young adults (AYA) aged 13–35 recruited and followed up in 2017–2019. We conducted a structured quantitative survey to assess levels of hope amon...
This study aimed at assessing the experiences of people living with HIV who participated in an agricultural
livelihood support initiative in selected districts of Uganda. The initiative, implemented from 2017 to 2018, involved
the provision of agricultural inputs such as beans, cassava cuttings, goats, chickens, and pigs to participants.
In-dept...
There is a growing population of older people with HIV (PWH) in Uganda. Sleep problems disproportionately affect older people and PWH. This study aimed to estimate correlates of sleep health among older Ugandans (aged ≥ 50 years) with and without HIV, using data from the Quality of Life and Aging with HIV in Rural Uganda Study. We used the Pittsbur...
Background: We describe lessons learnt from community engagement activities for the successful implementation of a COVID-19 community surveillance study in Kalungu district, south-western Uganda. Methods: One rural and one urban site were selected for COVID-19/SARS-CoV-2 community surveillance in selected households and three public health faciliti...
Background
Consideration of ethics in the promotion of medications is essential to safeguard the health of consumers, particularly during health crises. The World Health Organization (WHO) and the South African Health Products Regulatory Authority (SAHPRA) have established stringent standards to ensure the integrity of pharmaceutical promotions and...
Background
Zoonoses are of public health importance with most major emerging diseases originating in animal populations. Rift Valley Fever (RVF), Crimean-Congo Haemorrhagic Fever (CCHF) and Brucellosis are circulating in Uganda causing frequent outbreaks, but gaps exist in the understanding of transmission dynamics, community perspectives and effec...
Linkage to HIV care remains suboptimal among men. We investigated the effectiveness of a male-targeted HIV-specific decision support app, Empowering People through Informed Choices for HIV (EPIC-HIV), on increasing linkage to HIV care among men in rural South Africa. Home-Based Intervention to Test and Start (HITS) was a multi-component cluster-ran...
Background: Young (ages 18-35 years) men are inadequately engaged in HIV prevention and treatment globally, including in South Africa, increasing the likelihood of them having sexually transmissible HIV (i.e. living with HIV but with high viral loads). We sought to understand how mens experiences of poverty and violence, impacted on transmissible H...
Violence, poor mental health, and harmful substance use are commonly experienced by female sex workers (FSWs) in sub-Saharan Africa, all of which are associated with increased HIV susceptibility. We aimed to investigate the associations between violence, poor mental health and harmful alcohol/substance use with hair cortisol concentration (HCC) lev...
Violence, alcohol use, substance use and poor mental health have been linked with increased HIV acquisition risk, and genital inflammation enhances HIV susceptibility. We examined whether past 6 month experience of these exposures was associated with increased genital inflammation, thereby providing a biological link between these exposures and HIV...
Background
The relationship between HIV and frailty, a predictor of poor outcomes in the face of stressors, remains unknown in older people in sub-Saharan Africa.
Methods
We analysed data from the Quality of Life and Ageing with HIV in Rural Uganda cohort study to estimate the prevalence and correlates of frailty among older people with HIV (PWH)...
Whilst many lessons were learned from the COVID-19 pandemic, ongoing reflection is needed to develop and maintain preparedness for future outbreaks. Within the field of infectious disease and public health there remain silos and hierarchies in interdisciplinary work, with the risk that humanities and social sciences remain on the epistemological pe...
Pre-exposure prophylaxis (PrEP) is highly effective at reducing HIV acquisition. We aimed to estimate usage of oral-PrEP, and factors associated with adherence among female sex workers (FSWs) in Nairobi, Kenya, using a novel point-of-care urine tenofovir lateral flow assay (LFA). The Maisha Fiti study randomly selected FSWs from Sex Worker Outreach...
Kangaroo mother care (KMC) is an evidence-based method to improve newborn survival. However, scale-up even for stable newborns has been slow, with reported barriers to implementation. We examined facilitators and barriers to initiating KMC before stabilisation amongst neonates recruited to the OMWaNA study in Uganda. The OMWaNA study was a randomis...
Introduction
Adolescents living with HIV (ALHIV) are an extremely vulnerable population, with the burden of mental health problems carefully documented together with the constraints for receiving timely and adequate management of the problems, especially in rural settings. Problem Management Plus (PM+) is a scalable psychological intervention for i...
Introduction
Transfeminine people in South Africa have a high HIV risk due to structural, behavioural, and psychosocial factors. Transfeminine people and feminine identifying men who have sex with men (MSM) are often conflated or grouped with transgender or MSM categories in HIV service programming, although they don’t necessarily identify as eithe...
Background
Combination prevention interventions, when integrated with community-based support, have been shown to be particularly beneficial to adolescent and young peoples’ sexual and reproductive health. Between 2020 and 2022, the Africa Health Research Institute in rural South Africa conducted a 2 × 2 randomised factorial trial among young peopl...
Pregnancy can place adolescent girls and young women (AGYW) at risk of poor mental health. However, evidence linking youth pregnancy to mental health in resource-limited settings is limited, especially where HIV incidence is high. We analysed a population-representative cohort of AGYW aged 13–25 in rural KwaZulu-Natal to assess how adolescent pregn...
Background
Structural, interpersonal and individual level factors can present barriers for HIV prevention behaviour among people at high risk of HIV acquisition, including women who sell sex. In this paper we document the contexts in which women selling sex in Kampala meet and provide services to their clients.
Methods
We collected qualitative dat...
Background The COVID-19 pandemic and the non-pharmacological prevention methods have affected the wellbeing of older people. In this paper we focus on the wellbeing, and vulnerability, of older people in rural northern KwaZulu-Natal, South Africa during the first year of the pandemic. Methods We conducted monthly in-depth interviews for up to four...
Men in sub-Saharan Africa are less likely to accept HIV testing and link to HIV care than women. We conducted a trial to investigate the impact of conditional financial incentives and a decision support application, called EPIC-HIV, on HIV testing and linkage to care. We report the findings of the trial process evaluation to explore whether the int...
Background
We sought to determine whether the Good School Toolkit-Primary violence prevention intervention was associated with reduced victimisation and perpetration of peer and intimate partner violence four years later, and if any associations were moderated by sex and early adolescent: family connectedness, socio-economic status, and experience...
Introduction
The World Health Organisation (WHO) has set targets for the elimination of Hepatitis B virus (HBV), which include preventing new infections and reducing deaths. We explored beliefs, behaviours and barriers to diagnosis, prevention and treatment for people living with HBV infection (PLWHB) and those with liver disease in a rural South A...
Combination HIV prevention packages have reduced HIV incidence and improved HIV-related outcomes among young people. However, there is limited data on how package components interact to promote HIV-related prevention behaviours. We described the uptake of HIV prevention interventions supported by Determined, Resilient, Empowered, AIDS-free, Motivat...
The COVID-19 vaccine rollout programme in Uganda was launched in March 2021 for priority groups: Healthcare Workers (HCWs), older persons (≥50 years), and persons with chronic conditions. Misinformation, distrust in healthcare systems, and cultural beliefs, pose significant challenges to vaccine uptake. We describe the social and structural factors...
Chronic hepatitis B infection (CHB) affects 300 million people worldwide and is being targeted by the United Nations 2030 Sustainable Development Goals (SDGs) and the World Health Organisation (WHO), working towards elimination of hepatitis B virus (HBV) as a public health threat. In this piece, we explore the evidence and potential impact of peer...
Background
The COVID-19 pandemic forced governments, multilateral public health organisations and research institutions to undertake research quickly to inform their responses to the pandemic. Most COVID-19-related studies required swift approval, creating ethical and practical challenges for regulatory authorities and researchers. In this paper, w...
Background
The involvement of pregnant women in vaccine clinical trials presents unique challenges for the informed consent process. We explored the expectations and experiences of the pregnant women, spouses/partners, health workers and stakeholders of the consent process during a Group B Streptococcus maternal vaccine trial.
Methods
We interview...
Objectives
Locally led research on cancer is needed in sub-Saharan Africa to set feasible research priorities that inform national policy. The aim of this project was to develop a research agenda for national cancer control planning, using a nationally driven approach, focused on barriers to diagnosis and high-quality treatment for prostate cancer...
Introduction:
Young migrants may engage in risky behaviours due to social, economic, and psychological challenges as they try to "get by" in their new host communities. This can result in unintended pregnancies, sexually transmitted infections including HIV, and poor mental health outcomes.During a study to test the feasibility and acceptability o...
Introduction
In South Africa, the HIV care cascade remains suboptimal. We investigated the impact of small conditional financial incentives (CFIs) and male‐targeted HIV‐specific decision‐support application (EPIC‐HIV) on the HIV care cascade.
Methods
In 2018, in uMkhanyakude district, 45 communities were randomly assigned to one of four arms: (i)...
Background: Understanding the knowledge, perception and attitudes towards Ebola vaccines is an important factor in ensuring future use of these vaccines. A qualitative methods study embedded in an Ebola vaccine immunogenicity and safety trial (NCT04028349) was conducted to explore the knowledge and perceptions of healthcare (HCWs) and frontline wor...
Introduction We conducted a survey to investigate the uptake of COVID-19 vaccination among healthcare workers (HCWs) and older persons (≥ 50 years) in Uganda, groups at particular risk of infection and severe disease outcomes respectively. Methods The survey was conducted between May and August 2021, during the early phase of COVID-19 vaccine roll-...
Introduction: Linkage to HIV care remains suboptimal among men. We investigated the effectiveness of a male-targeted HIV-specific decision support app, Empowering People through Informed Choices for HIV (EPIC-HIV), on increasing linkage to HIV care among men in rural South Africa.
Methods: Home-Based Intervention to Test and Start (HITS) was a mult...
Introduction
HIV elimination requires innovative approaches to ensure testing and immediate treatment provision. We investigated the effectiveness of conditional financial incentives on increasing linkage to HIV care in a 2×2 factorial cluster randomized controlled trial-Home-Based Intervention to Test and Start (HITS) - in rural South Africa.
Met...
Young adults with perinatally acquired HIV (PAH) face numerous challenges, including antiretroviral therapy (ART) adherence, managing onward HIV transmission risks and maintaining wellbeing. Sharing one’s HIV status with others (onward HIV disclosure) may assist with these challenges but this is difficult. We developed and tested the feasibility of...
Eliminating violence against women and children are part of Sustainable Development Goals 4, 5 and 16. Using data from a prospective cohort of 3438 young people in Luwero, Uganda followed at a median age of 13 years, 17 years, and 21 years, we find that childhood violence from teachers, peers, and caregivers increases risk of subsequent intimate pa...
BACKGROUND
Consideration of ethics in the promotion of medications is essential to safeguard the health of consumers, particularly during health crises. The World Health Organization (WHO) and the South African Health Products Regulatory Authority (SAHPRA) have established stringent standards to ensure the integrity of pharmaceutical promotions and...
Scientific evidence on the safety and efficacy of pharmaceutical drugs, substances and herbal medicines is important in medical advertising and promotion. Following guidelines for conducting a scoping review, we systematically searched PubMed, SCOPUS and Web of Science to identify in peer reviewed articles medications that were promoted and used wi...
Background The COVID-19 pandemic and the non-pharmacological prevention methods have affected the wellbeing of older people. In this paper we focus on the wellbeing, and vulnerability, of older people in rural northern KwaZulu-Natal, South Africa during the first year of the pandemic. Methods We conducted monthly in-depth interviews for up to four...
Across sub-Saharan Africa, stigma levels have been decreasing but not enough to achieve the 95–95–95 HIV targets by 2030. Current global HIV frameworks have identified stigma reduction, context specific interventions, and community mobilization as critical to enabling more effective uptake of HIV services. We conducted a retrospective analysis of l...
Loneliness among older adults has been identified as a major public health problem. Yet little is known about loneliness, or the potential role of social networks in explaining loneliness, among older people with HIV (PWH) in sub-Saharan Africa, where 70% of PWH reside. To explore this issue, we analyzed data from 599 participants enrolled in the Q...
Kangaroo mother care (KMC) is an evidence-based method to improve newborn survival. However, scale-up even for stable newborns has been slow, with reported barriers to implementation. We examined facilitators and barriers to initiating KMC before stabilisation amongst neonates recruited to the OMWaNA study in Uganda.
A qualitative sub-study was con...
Introduction
Women in fishing communities have both high HIV prevalence and incidence, hence they are a priority population for HIV prevention and treatment interventions. However, their mobility is likely to compromise the effectiveness of interventions. We assessed the acceptability, feasibility and of using phones and global positioning system (...
High HIV prevalence among female sex workers (FSWs) is heavily influenced by structural determinants (e.g. criminalisation of sex work; violence) and significant life events (e.g. orphanhood, teenage pregnancy). This study aims to understand the epidemiology of HIV among FSWs in Nairobi, Kenya using a structural determinants and life-course perspec...
Background: Adolescents and young adults living with HIV (AYA) are faced with the challenge of living with a life-long chronic condition. We investigated the influences on the decisions by AYA to disclose their HIV status to family, intimate partners and friends.Methods: Twenty AYA aged between 15 and 24 years were purposely selected through local...
At the beginning of the COVID-19 pandemic, the Kenya Ministry of Health instituted movement cessation measures and limits on face-to-face meetings. We explore the ways in which female sex workers (FSWs) in Nairobi were affected by the COVID-19 control measures and the ways they coped with the hardships. Forty-seven women were randomly sampled from...
Objective
To explore factors associated with early age at entry into sex work, among a cohort of female sex workers (FSWs) in Nairobi, Kenya.
Background
Younger age at sex work initiation increases the risk of HIV acquisition, condom non-use, violence victimisation and alcohol and/or substance use problems. This study aimed to understand factors i...
Background
Participant information sheets and consent forms (PIS&C) in paediatric/adolescent clinical research are predominantly produced by adults. They are long and complex, meeting ethics, regulatory, and where applicable, pharmaceutical industry requirements, rather than the target audience. Young people report they do not understand much of th...
Children born to women who sell sex for money or commodities may face economic and social insecurity because of their mother’s work, particularly in settings where sex work is illegal. From October 2020 to May 2021, we conducted a study with 60 children aged 12–24 years, born to sex workers in Kampala, Uganda. The children took part in 60 semi-stru...
Background:
Community engagement and involvement (CEI) in research usually depends on face-to-face interactions. However, the COVID-19 pandemic prevented such interactions because of national lockdowns and social distancing. This paper highlights the ways in which early career researchers from East Africa tackled CEI activities during the pandemic...
Background The COVID-19 pandemic and the non-pharmacological prevention methods have affected the wellbeing of older people. In this paper we focus on the wellbeing, and vulnerability, of older people in rural northern KwaZulu-Natal, South Africa during the first year of the pandemic. Methods We conducted monthly in-depth interviews for up to four...
Background
We investigated how social and contextual factors shape perceptions and attitudes of rural and urban dwellers towards vaccines in South Africa. We assessed the views, acceptance, and uptake of vaccines for a range of infectious diseases, in the light of the experiences of the COVID-19 pandemic.
Methods
We conducted 30 in-depth face-to-f...
We investigated prevalence and demographic characteristics of adults living with multimorbidity (≥2 long-term conditions) in three low-income countries of sub-Saharan Africa, using secondary population-level data from four cohorts; Malawi (urban & rural), The Gambia (rural) and Uganda (rural). Information on; measured hypertension, diabetes and obe...
Background
In the last decade, universally available antiretroviral therapy (ART) has led to greatly improved health and survival of people living with HIV in sub-Saharan Africa, but new infections continue to appear. The design of effective prevention strategies requires the demographic characterisation of individuals acting as sources of infectio...
Objective
To identify key areas for research in prostate cancer (PC) in the Ugandan context by establishing the major health system, socioeconomic and clinical barriers to seeking, reaching and receiving high-quality cancer care.
Design
Modified Delphi Technique.
Setting
Government and private-not-for-profit hospitals.
Methods
We applied a two-s...
Adolescent girls face social, psychological, and physical problems managing menstruation in schools in low-resource settings. This study aimed to evaluate the social and physical menstrual health environment of secondary schools in Wakiso and Kalungu districts, Uganda, in preparation for a subsequent menstrual health intervention trial to improve e...
For many young people in Uganda, labour migration has become a part of growing up. They may not move far, but it is still a move away from a place they belong. For young migrants, the route to economic independence may be precarious, even for those who have people they know nearby. We trace the experience of 12 young male and female migrants (aged...
Background and Objectives
Sub-Saharan Africa is home to 3.7 million older adults living with HIV, who experience high rates of comorbid conditions. Formal services other than HIV clinical care are largely unavailable. Overall, women are the mainstay of informal social support networks, and older women with HIV may face burdens due to family caregiv...
Introduction
Broad Brush Surveys (BBS) are a rapid, qualitative assessment approach using four meta-indicators -physical features, social organization, social networks and community narratives - to gauge how local context interfaces with service/intervention options, implementation and uptake.
Methods
In 2021, responding to rapid urbanization and...
The Friends for Life Circles (FLC) was a parallel randomized controlled trial testing the efficacy of a group peer support intervention to support long-term adherence to Option B+ in Kampala and Mityana districts in Uganda. We explored FLC participants’ experiences and perceptions of the intervention on adherence to Option B+ for PMTCT and potentia...
Dementia is an important and growing issue in sub-Saharan Africa, but epidemiological data are lacking. Risk factors may differ from other regions due to high stroke incidence and HIV prevalence. Understanding the epidemiology of cognition in older adults in Africa is crucial for informing public health strategies to improve the lives of people wit...
Background
HIV remains a leading contributor to the disease burden in sub-Saharan Africa, with adolescents and young people disproportionately affected. Optimising pre-exposure prophylaxis (PrEP) uptake has predominantly focused on women and adult men who have sex with men. We explore adolescent boys and young men’s PrEP uptake preferences in South...
Background: The COVID-19 pandemic forced governments, multilateral public health organisations and (academic) research institutions to undertake research quickly to inform their responses to the pandemic. Most COVID-19-related studies required swift ethical approval, creating ethical and practical challenges for both regulatory authorities and rese...
Background
Recent population-representative estimates of sexually transmitted infection (STI) prevalence in high HIV burden areas in southern Africa are limited. We estimated the prevalence and associated factors of 3 STIs among adolescents and young adults (AYA) in rural South Africa.
Methods
Between March 2020 and May 2021, a population-represen...