Middle-income Countries Research Articles

Rethinking pharmacovigilance: Building inclusive drug safety systems for marginalized populations

Pharmacovigilance is critical in facilitating efforts targeted at closing the health gap by monitoring, assessing and preventing the occurrence of adverse drug reactions (ADRs) across diverse populations. This review aims to evaluate how pharmacovigilance systems can help mitigate healthcare inequalities specifically in low and middle-income countries (LMICs). The role of pharmacovigilance as part of the modern drug safety system integrated within a healthcare system became indispensable during the COVID-19 pandemic when drug decision-making required strong supervision systems in terms of vaccine safety. However challenges exist, such as lack of resources, training and inadequate infrastructure that is particularly apparent in LMICs. The manuscript considers the social determinants of health; structural inequities and other system factors that account for the differences in the health status and medication safety among different marginalized groups. The use of modern technology such as electronic health records coupled with data mining strategies is an effective way of enhancing pharmacovigilance. Community engagement, educating healthcare providers, and collaborating internationally appear to be strong strategies for enhancing pharmacovigilance systems. Case studies from Bolivia and Nigeria illustrate such a strategy effectively. The review concludes that healthcare professionals and drug monitoring systems must be strengthened, and improved and recommends a unified approach involving healthcare workers, policymakers, and communities to build robust, equitable drug safety monitoring systems.

Community-based model for management and follow-up by non-physician healthcare workers to improve awareness, treatment, and control of hypertension: The COTRACO study protocol.

Cardiovascular diseases are the leading cause of death and morbidity worldwide, with a significantly higher burden in low- and middle-income countries. Hypertension, a major risk factor for cardiovascular morbidity and mortality, remains under-diagnosed and poorly controlled, especially in regions such as Latin America. The HOPE-4 study demonstrated that the involvement of non-physician health workers (NPHWs), the use of standardized treatment algorithms, the provision of free antihypertensive drugs and home follow-up can significantly improve hypertension control and reduce cardiovascular risk, as demonstrated in Colombia and Malaysia. On this basis, the COTRACO study aims to address the barriers to hypertension treatment in low- and middle-income countries by implementing a similar standardized treatment approach delivered by non-specialist health workers. The COTRACO study is a quasi-experimental, parallel-group, non-randomized, before-and-after study. A community-based model will be implemented in 600 patients in Colombia and the Dominican Republic, involving NPHWs to: 1) apply standardized treatment algorithms, 2) promote adherence to healthy lifestyles, and 3) provide standardized pharmacological treatment. Propensity Score Matching will be used to select 300 patients in Chile and 1200 in Spain for comparison with standard care in these populations. The primary outcome at 12 months of follow-up is the percentage of patients achieving controlled hypertension (defined as systolic BP<140mmHg and diastolic BP<90mmHg, or<130mmHg, and diastolic BP<80mmHg for diabetic patients), ensuring it is not inferior to that achieved in the control countries. Secondary outcomes include changes in BP levels, cholesterol levels, BMI, handgrip strength, waist-to-hip ratio, smoking status, Interheart risk score, diet, and physical activity at 6 and 12 months. If this model demonstrates superior outcomes compared to usual care, it is recommended that health authorities in low- and middle-income regions adopt and implement this approach. Using non-medical health professionals, standardized treatment algorithms and free access to antihypertensive medications, these regions can significantly improve awareness, diagnosis and management of hypertension. This strategy has the potential to reduce cardiovascular morbidity and mortality, thereby improving overall public health outcomes.

Unveiling Hepatitis C: Causes, Impact and advances in treatment

Hepatitis C Virus (HCV) infection continues to pose a major global health issue, with around 58 million chronic cases reported worldwide and about 1.5 million new infections each year. This virus is a primary contributor to chronic liver disease, cirrhosis, and hepatocellular carcinoma (HCC), leading to approximately 290,000 deaths annually (WHO, 2022). The introduction of direct-acting antiviral (DAA) therapies has transformed HCV treatment, with sustained virologic response (SVR) rates surpassing 95% across various genotypes. However, challenges remain in meeting the World Health Organization's target of eliminating HCV as a public health threat by 2030. Key obstacles include low diagnosis rates, as only 21% of those infected with HCV are aware of their condition, and restricted access to treatment, especially in low- and middle-income countries (LMICs). This article reviews the latest epidemiological trends related to HCV, focusing on the disparities in disease burden and access to healthcare. It discusses innovative diagnostic methods, such as point-of-care testing, and emphasizes the importance of universal screening programs in areas with high prevalence. Additionally, we look at new therapeutic strategies, including pan-genotypic DAAs and their effects on marginalized communities. Lastly, we examine public health initiatives aimed at enhancing HCV prevention, such as harm reduction programs and vaccination efforts for co-infections like hepatitis B. By integrating findings from recent studies and reports, this article highlights the necessity for collaborative global efforts to address the challenges of HCV elimination. Strategies that emphasize prevention, early detection, and fair access to treatment are crucial for alleviating the HCV disease burden and reaching elimination goals.

Successful open defecation-free intervention in low- and middle-income countries: a qualitative synthesis systematic review protocol

IntroductionThe results of open defecation-free (ODF) programmes vary greatly, especially in low- and middle-income countries (LMICs). This study will systematically investigate available qualitative research to identify the elements contributing to...

Assessing the role of education level on climate change belief, concern and action: a multinational survey of healthcare professionals in nephrology.

Climate change poses a significant risk to kidney health, and countries with lower national wealth are more vulnerable. Yet, citizens from lower-income countries demonstrate less concern for climate change than those from higher-income countries. Education is a key covariate. To examine its role in explaining this perception gap, we obtained the perspectives of a highly educated cohort of healthcare professionals. This was a cross-sectional survey of healthcare professionals involved in kidney care. Responses were compared by the income level of the participant's country (per World Bank). Of the 849 healthcare professionals from 107 countries (63.4% from lower and middle-income countries) that participated, most believed climate change was happening (97.9%), displayed a high level of concern (73.3%), and took personal action to combat climate change (62.0%). While the proportion who believed in climate change did not vary by income level (high:98.1%, upper-middle:97.2%, lower-middle:97.8%, low:100%, p = 0.73), the proportion with a higher level of concern (high:80.7%, upper-middle:74.9%, lower-middle:67.5%, low:53.8%, p < 0.001), and who took climate action (high:76.2%, upper-middle:63.1%, lower-middle:51.2%, low:30.8%, p < 0.001) decreased by national wealth. Barriers to involvement in sustainable kidney care were lack of time (54.4%), knowledge (39.7%), and peer support (30.3%). Only 34.0% were aware of national mitigation plans and barriers related to finances, technologies, tools, methods, research, and evidence were perceived as greater obstacles in lower-income countries. Our results highlight that predictors and correlates of climate change risk perception vary across countries. Education alone is unlikely to increase individual and group engagement in climate change. A better understanding of these factors can inform strategies towards climate action in different settings.

A meta-core outcome set for stillbirth prevention and bereavement care following stillbirth in LMIC

Study objectiveStillbirth is burdensome in low-income and middle-income countries (LMICs), especially in sub-Saharan Africa and South Asia. Currently, there are two core outcome sets (COS) for stillbirth (prevention and bereavement...

Epidemiology of Cancer in the Fiji Islands: 2010 to 2018.

Cancer is a global public health concern with increasing incidence and mortality rates, particularly in low- and middle-income countries (LMICs) like the Pacific Island Countries and Territories (PICTs). Among the PICTs, Fiji faces a growing burden of cancer. This study aimed to analyze cancer incidence and mortality data in Fiji from 2010 to 2018 to identify trends and provide an update on the current cancer-related statistics in the Fiji Islands. The top three cancer incidence rates among women were breast, cervical, and endometrial cancer, whereas prostate, liver, and lung cancer were the most prevalent among men. Notably, the central division had higher cancer incidence rates, whereas the northern division had a disproportionately higher mortality rate. Factors contributing to these trends may include lifestyle behaviors, limited access to health care in certain regions, and low awareness. Although this study has limitations due to data quality, it emphasizes the need for targeted interventions, accurate data reporting, and improved cancer treatment delivery to reduce the burden of cancer in Fiji.

Association Between Plasmodium Infection and Blood Count Values: Implications for Malaria Diagnosis in Resource-Limited Settings

PurposeMalaria remains a major global health challenge, particularly in sub-Saharan Africa and low- and middle-income countries (LMICs), contributing substantially to mortality and morbidity rates. In resource-limited settings, access to specialized diagnostic tests is often restricted, making basic blood analysis a valuable diagnostic tool. This study investigated the correlation between malaria infection and full blood count values in a rural region of Ghana during the 2022 rainy season, aiming to highlight diagnostic insights available from routine blood analyses.MethodsA retrospective case-control analysis was conducted on 544 confirmed malaria cases, comparing their blood values with those of matched malaria-negative controls.ResultsParasitaemia levels peaked during the rainy season, with July showing the highest values. Malaria-positive patients exhibited lower levels of haemoglobin, white blood cells, lymphocytes, and platelets, but higher neutrophil counts compared to controls. Middle-aged women had significantly lower haemoglobin levels than men, and younger individuals showed higher parasitaemia levels. A negative correlation was found between Plasmodium density and haemoglobin and platelet counts, while positive correlations were observed with white blood cell and neutrophil counts.ConclusionThis study highlights the significant burden of malaria in rural Ghana during the rainy season and underscores the impact of infection on blood values. Routine full blood count analysis provides a practical and accessible diagnostic tool in resource-limited settings. The findings emphasise the importance of targeted interventions for high-risk groups, particularly children and women, to improve patient management and reduce malaria-related morbidity.Graphical

Post-Term Birth in Middle Income Countries: Data and Public Health Challenges.

Post-Term Birth in Middle Income Countries: Data and Public Health Challenges.

Retraction Note: Comment on - Reducing the burden of repeated ventriculo-peritoneal shunt surgery and infection in low- and middle-income country.

Retraction Note: Comment on - Reducing the burden of repeated ventriculo-peritoneal shunt surgery and infection in low- and middle-income country.

Impact of changes in primary care attachment: a scoping review

ObjectivesPrimary care attachment represents an inclusive, equitable and cost-effective way of enhancing health outcomes globally. However, the growing shortage of family physicians threatens to disrupt patient–provider relationships. Understanding the consequences...

Pharmacist gatekeeper interventions for suicide prevention: how evidence from developed countries support their role in low- and middle-income countries

Pharmacist gatekeeper interventions for suicide prevention: how evidence from developed countries support their role in low- and middle-income countries

Brain drain in Emergency Medicine in Lebanon, building locally and exporting globally

ObjectiveDespite the growth of Emergency Medicine (EM) globally, shortages of EM-trained physicians persist in many countries, disproportionately affecting lower middle/low-income countries (LMIC/LIC). This study examines the career paths of graduates of an Emergency Medicine residency-training program established in Lebanon with the aim of building local capacity in EM.Design and patientsThis descriptive study utilizes secondary data sourced from an alumni database that includes nine cohorts of graduates from an Emergency Medicine residency program at the American University of Beirut Medical Center in Lebanon.Measurements and main resultsWithin 12 years since the EM residency program establishment a total of 9 cohorts, including 44 physicians had completed their residency training in EM, with 40.9% being female and 95.5% Lebanese citizens. After graduation, almost half of our graduates (47.7%) enrolled in fellowship training programs and 40.9% joined the workforce. Fellowships in Trauma (19%) and Oncologic Emergencies (19%) were the most commonly pursued. Initial employment destinations predominantly included Lebanon, the United Arab Emirates and the Kingdom of Saudi Arabia, (61.1, 33.3 and 5.6% respectively). However, retention within the local market declined with time, with a median time spent in Lebanon of 1 year and a mean of 3.3 years of practice in Lebanon prior to emigration. Presently, graduates are mostly dispersed across the Gulf Cooperation Council region (38.6%), the USA (25%), and Lebanon (20.5%).ConclusionBuilding Emergency Medicine expertise to match the growing population needs for specialized acute care remains a challenge globally, especially in low-middle income and low-income countries. Our study highlights the challenge of retaining specialized medical graduates in LMIC. Understanding and addressing the root-causes of out-migration of highly specialized medical workforce is an essential component of addressing local workforce challenges that needs to be coupled with capacity building initiatives for meaningful impact.

Interventions to prevent and manage infections in pregnancy.

Interventions aimed at preventing and treating maternal infections during the gestational period are of paramount importance. Timely immunizations, screening strategies and management of maternal infections reduce the risk of complications for the developing fetus and play a pivotal role in improving neonatal outcomes. We summarize evidence for a total of thirteen interventions, pertaining to the prevention and treatment of maternal infections during the antenatal period, from Every Newborn Series published in The Lancet 2014. We identified the most recent systematic reviews, extracted data from each review, and conducted a sub-group meta-analysis for low-income countries (LICs) and lower-middle income countries (LMICs) for outcomes relevant to neonatal health. Evidence from LMICs suggests that influenza virus vaccination had no effect on stillbirth, preterm birth, small for gestational age (SGA) or low birthweight (LBW). Insecticide-treated bed nets (ITN) in pregnancy reduced the risk of fetal loss and improved the babies' birthweight. Changing a two-dose intermittent preventive treatment (IPTp) regimen to more frequent IPTp dosing decreased the risk of LBW) and significantly improved babies' birthweight. Addition of antibacterial antibiotic to the IPTp regimen significantly reduced the risk of LBW. Antibiotic treatments for syphilis and chlamydia had a significant effect on LBW. Treatment of documented periodontal disease during pregnancy reduced the risk of LBW. Findings from our papers indicates limited evidence from LMICs, highlighting the pressing need for coordinated efforts to close this gap and strengthen the body of inclusive evidence on prevention and treatment of maternal infections during pregnancy.

Impact of estimated glomerular filtration rate (eGFR) on in-hospital mortality: an age- and HIV status-specific retrospective cohort study in Uganda

BackgroundLimited studies have explored the relationship between estimated Glomerular Filtration Rate(eGFR) and in-hospital mortality(IHM) in low-income sub-Saharan African countries. This study aimed to explores this association, offering insights into its impact in resource-limited settings.Methods and resultsWe retrospectively included 226 patients(age 45.35 ± 18.85yrs, 54.4% women) admitted to Naguru-referral hospital between January 1st and June 30th, 2024. Baseline demographics and clinical variables, including eGFR, were recorded at admission. Patients were followed from date of admission to discharge and primary outcome was IHM.Multivariable Hazard regression analysis assessed the association between eGFR and IHM, respectively. During follow-up, 45(19.9%) of patients died. Per-standard deviation(SD) increase in eGFR(48.60 mL/min/1.73m2) was associated with Hazard Ratio(HR) of 0.46[95%CI: 0.282–0.759, p = 0.002, β = -0.77] for IHM in fully adjusted models. When stratified by eGFR quartiles, using highest quartile(≥ 120 mL/min/1.73m2) as reference, HR was 1.08[95%CI: 0.276–4.226, p = 0.912, β = + 0.08] for 99.0–120 mL/min/1.73m2; 4.08[95%CI: 1.284–12.954, p = 0.017, β = + 1.41] for 66.8–99.0 mL/min/1.73m2, and 4.08[95%CI: 1.284–12.954, p = 0.037, β = + 1.25] for < 66.8 mL/min/1.73m2. Among age stratification-subgroups: age < 40yrs: 0.93[95%CI: 0.89–0.97, p < 0.001, β = -0.07]; 40-60yrs: 0.98[95%CI: 0.966–0.999, p = 0.039, β = -0.02]; ≥ 60yrs, p < 0.005 with p-value-interaction for age = 0.046; and HIV-positive: 0.94[95%CI: 0.905–0.974, p < 0.001, β = -0.06] with p-value-interaction = 0.021. Significant Pearsons-correlation(r) was observed only in: [< 40yrs, HIV(-)] with p = 0.016, r = -0.275; [40-60yrs, HIV( +)] with p = 0.020, r = -0.397; and [≥ 60yrs,HIV( +)] with p = 0.003, r = -0.997.ConclusionsWe report that eGFR was associated with in-hospital mortality, with a stronger association observed in HIV-negative patients(< 40yrs) and HIV-positive patients (aged ≥ 60yrs yrs). Further research is warranted to validate these findings.

Implementing psychosocial interventions for teachers' mental health: Protocol for integrating scoping review with teachers lived experiences in LMICs.

Teachers are pivotal in shaping educational environments and student development but face significant occupational stress and high rates of mental problems. Despite the availability of various psychosocial interventions, comprehensive evidence of their effectiveness and implementation is limited for this occupational group, especially in low- and middle-income countries (LMICs). This mixed methods study aims to conduct a scoping review of characteristics, effectiveness, and implementation outcomes of psychosocial interventions for teachers' mental health and mental problems, integrating these with teachers' lived experiences to inform the implementation of mental health interventions in LMICs. The study combines a scoping review with insights from an advisory group of teaching professionals with relevant lived experiences (PWLEs). The review will focus on examining psychosocial interventions studies promoting mental health or addressing mental problems among grade 1-12 school teachers of all genders, ages and contexts, except those working in specialized settings, such as special education centers, or disaster- or crisis-stricken zones. Intervention studies exclusively focusing on physical health or job-related outcomes will be excluded. Using pre-defined search terms, quantitative and qualitative research studies, including unpublished literature, will be searched across multiple databases. Titles and abstracts of identified studies will be screened against inclusion criteria, and the potentially relevant sources will be retrieved in full. Data will be extracted using a data extraction sheet developed for the study covering variables related to participant characteristics, intervention characteristics, study context, effectiveness and implementation outcomes. A purposively selected sample of 10 PWLEs will form the study advisory group and participate in four online workshop-group discussions. The meetings will include a presentation of the scoping review findings, followed by discussions on the relevance of these intervention packages for LMICs, adaptations needed to make them acceptable among school teachers and feasible for delivery in low-resourced settings like India. The synthesis of the data will employ narrative and thematic approaches to generate actionable insights for implementing psychosocial interventions in LMICs. This study will provide comprehensive evidence on the characteristics and outcomes of psychosocial interventions for teachers' mental health and mental problems. By integrating insights from teachers with relevant lived experiences, the study will provide practical guidelines for adapting and implementing psychosocial interventions among school teachers in LMICs. Review registration number: Open Science Framework, doi.org/10.17605/OSF.IO/GF59J.

ULACNet-301, OPTIMO protocol: optimizing HPV vaccination regimen for cancer prevention in children and adolescents living with HIV

BackgroundPersistent infection with human papillomavirus (HPV) is associated with most cervical and anal cancer cases and a large fraction of other anogenital and oropharyngeal cancers. The prophylactic HPV vaccines are known to prevent HPV infections and HPV-associated disease, although there is evidence of reduced response to the HPV vaccination among individuals living with HIV. Prior studies among individuals without HIV suggest that a single HPV vaccine dose induces humoral immune responses that, while lower than those induced by two or three doses, still confer protection against HPV infection. Current recommendations for HPV vaccine include a single-dose schedule for children 9–14-years-olds without HIV. Although two to three doses are recommended for children living with HIV (CLWH), there is very limited data comparing responses to one vs. 2–3 doses in CLWH.MethodsThe OPTIMO study will compare immune responses to HPV vaccination in CLWH by measuring antibody and memory B cell (Bmem) responses after 1, 2, or 3 doses of the 9-valent HPV (9vHPV) vaccine, Gardasil-9. A comparison group of children without HIV will receive one dose of the vaccine. The durability of the response will be assessed at 24 months after the last dose of a given regimen. The OPTIMO trial will take place among CLWH from low and middle-income country (LMIC) settings in Peru, Brazil, and Haiti.DiscussionPrevious studies of single-dose regimens in individuals without HIV raise questions about whether one dose would suffice for CLWH and, if not, whether two or three doses are needed to provide protection against HPV-related cancers. These questions have operational consequences in LMICs given the barriers to delivering multiple doses, uneven availability, and intermittent shortages of HPV vaccines. In addition, information on HIV status for children and adolescents is rarely available during vaccination campaigns based in schools or public health clinics, so CLWH may receive a single dose despite policy recommendations that they receive two or three. This study will provide evidence on the optimal number of doses needed for CLWH that can inform HPV vaccination campaigns in LMICs, especially those with a higher burden of HIV infection and higher incidence of HPV-related cancers.Trial registrationClinicalTrials.gov NCT04265950.

Exploring the clinical profiles and management of juvenile dermatomyositis in Africa: a survey of African rheumatology care providers

BackgroundThere are limited studies of juvenile dermatomyositis (JDM) in low and middle-income countries (LMIC). Many demonstrate delays to care, high prevalence of severe manifestations, and high mortality. Given the disease-associated damage with JDM, understanding JDM in Africa further is critical. Our objectives are to understand the burden of JDM in Africa and provider access to diagnostic tools and therapy through survey methodology.MethodsA survey (available in English and French) was distributed via WhatsApp to 363 total members of the African League of Associations for Rheumatology (AFLAR; n = 233) and Paediatric Society of the African League Against Rheumatism (PAFLAR; n = 130) from November 2022-January 2023. Topics included respondent specialty, number of JDM patients followed, severe manifestations, and available diagnostic tools and medications (with and without considering cost).ResultsForty-three (12%) of the 363 providers who received the survey started it. Among the 43 who started the survey, 37 (86%) provided consent and manage JDM patients; of these 37 providers, 4 (11%) partially and 16 (43%) fully completed the survey. Most were adult and/or pediatric rheumatologists (n = 19; 95%). Respondents represented all 5 African regions and described 216 children with JDM within the last 10 years. There was high prevalence of calcinosis (as high as 100%) and interstitial lung disease (ILD) (as high as 32%); mortality rates in Kenya (6/42; 14%) and Zambia (2/7; 29%) exceeded the 1–3% mortality reported in studies of high-income countries. Thirteen of 27 diagnostic tools and medications were accessible to ≤ 50% of respondents after considering cost, mostly in Northern or Southern Africa (9/13; 69%). Despite being cost-free, disease assessment tools and physical exam to assess calcinosis were not reported as universally available or accessible.ConclusionsThis is the first study to explore experiences of providers caring for children with JDM in Africa. Respondents identified 216 children with JDM seen within the last 10 years, exceeding the 196 children with JDM reported within the last 25 years but likely still underestimating prevalence. Our findings align with reports of severe manifestations and poor outcomes in African children with JDM. Access to many diagnostics and medications is limited, and differences in accessibility parallel regional healthcare disparities. The potential differences in JDM severity warrant systematic study and highlight the need to include patients and providers from LMIC in collaborative research efforts.

Evaluating the impact, implementation experience and political economy of primary care networks in Kenya: protocol for a mixed methods study

BackgroundPrimary care networks (PCNs) are increasingly being adopted in low- and middle-income countries (LMICs) to improve the delivery of primary health care (PHC). Kenya has identified PCNs as a key reform to strengthen PHC delivery and has passed a law to guide its implementation. PCNs were piloted in two counties in Kenya in 2020 and implemented nationally in October 2023. This protocol outlines methods for a study that examines the impact, implementation experience and political economy of the PCN reform in Kenya.MethodsWe will adopt the parallel databases variant of convergent mixed methods study design to concurrently but separately collect quantitative and qualitative data. The two strands will be mixed during data collection to refine questions, with findings triangulated during analysis and interpretation to provide a comprehensive understanding of PCN implementation. The quantitative study will use a controlled before and after study design and collect data using health facility and client exit surveys. The primary outcome measure will be the service delivery readiness of PHC facilities. We will use a random sample of 228 health facilities and 2560 clients in four currently implementing PCNs, four planning to implement and four control counties at baseline and post-implementation. We shall undertake a preliminary cross-sectional analysis of the data at baseline from October to December 2023, followed by a difference-in-difference analysis at the endline from October to December 2024 to compare the outcome differences between the intervention and control counties over a 12-month period. The qualitative study will include a cross-sectional process evaluation and political economy analysis (PEA) using document reviews and approximately 80 in-depth interviews with national and sub-national stakeholders. The process evaluation will assess the emergence of PCN reforms, the implementation experience, the mechanism of impact and how the context affects implementation and outcomes. The PEA will examine the interaction of structural factors, institutions and actors/stakeholders’ interests and power relations in implementing PCNs. We will also examine the gendered effects of the PCNs, including power relations and norms, and their implications on PHC from the supply and demand sides. We shall undertake a thematic analysis of the qualitative data.DiscussionThis evaluation will contribute robust evidence on the impact, implementation experience, political economy and gendered implications of PCNs in a LMIC setting, as well as guide the refining of PCN implementation in Kenya and other LMICs implementing or planning to implement PCNs to enhance their effectiveness.

Cardiovascular Disease Multimorbidity and Decreased Health-Related Quality of Life in Haiti: A Cross-Sectional Study.

Multimorbidity is increasingly prevalent in lower- and middle-income countries. Health-related quality of life (HRQOL) has been inversely associated with multimorbidity but is understudied in lower- and middle-income countries. We report cardiovascular disease (CVD) multimorbidity in Haiti and its association with HRQOL. We used data from the Haiti CVD Cohort, a population-based longitudinal cohort of adults. CVD multimorbidity was 2+ CVD risk factors/diseases at enrollment. HRQOL was measured using the Short Form-12, yielding physical component summary/mental component summary scores between 0 and 100, with higher scores indicating better HRQOL. We used linear regressions to assess the association between CVD multimorbidity and HRQOL and individual CVD comorbidities and HRQOL. Additionally, we examined sex and education as potential effect modifiers. Among 2,996 participants, the median age was 40 years (interquartile range [IQR], 27-55), 58.0% were women, and 70.3% earned <1 US dollar per day. CVD multimorbidity prevalence was 24.1%; compared with those without CVD multimorbidity, those with CVD multimorbidity were older (median age, 56.0 years [IQR, 47.0-53.0]) and women (70.5%). Adjusted models revealed CVD multimorbidity was inversely related to physical component summary (-2.7 [95% CI, -3.8 to -1.6]) and mental component summary (-1.0 [95% CI, -1.8 to -0.2]). Heart failure and hypertension showed the strongest CVD morbidities associated with poor HRQOL. In the interaction analysis, among men, CVD multimorbidity was associated with a 4.3-point lower physical component summary score. Among those with less education, CVD multimorbidity was associated with a 4.6-point lower physical component summary score than no CVD multimorbidity. Our data are among the first to describe HRQOL data with high CVD multimorbidity in a young population in urban Haiti, and CVD multimorbidity was associated with decreased HRQOL. URL: https://www.clinicaltrials.gov; Unique identifier: NCT03892265.