Mapping the evidence: a scoping review of the impact of COVID-19 on non-communicable disease care in Sub-Saharan Africa.

Abstract

Non-communicable diseases (NCDs) are the leading cause of mortality globally and account for a growing proportion of the disease burden in sub-Saharan Africa (SSA), where health systems face significant resource constraints. The COVID-19 pandemic disrupted healthcare delivery globally, raising concerns that interruptions to routine NCD care could lead to higher morbidity and mortality among populations requiring ongoing care. Although evidence of the pandemic's impact on NCD care has been documented in high-income settings, the experience of SSA health systems, which entered the pandemic with preexisting infrastructure and workforce limitations, remains incompletely understood. This scoping review aimed to systematically map the evidence on COVID-19's impact on NCD care in SSA and to identify service adaptations implemented to maintain care continuity during the pandemic. Studies examining the COVID-19 pandemic and disruptions in NCD screening, diagnosis, or monitoring among adults in SSA were identified from four electronic databases: PubMed/Medline, Scopus, EBSCOhost, and Web of Science. The search strategy combined Medical Subject Headings (MeSH) terms and keywords related to geographic location (SSA), exposure (COVID-19 pandemic and related public health measures), and outcomes (screening, diagnosis, and monitoring of NCDs). Inclusion was limited to original research published between March 2020 and December 2023, written in English, French, or German, and reporting observational data on pandemic-related disruptions to NCD care. Two reviewers independently screened titles, abstracts, and full texts, with data extraction conducted using a standardized form capturing study characteristics, NCD types examined, nature of documented disruptions, and reported innovations. Twenty-eight studies were eligible for inclusion across seven countries in SSA, with the majority of evidence originating from South Africa and Ethiopia. Included studies were mainly retrospective and cross-sectional, with some using mixed-methods and time-series designs, and examined various NCDs, including diabetes mellitus, hypertension, and cancers. Sample sizes ranged from fewer than 100 participants to datasets exceeding 9 million records. Due to the heterogeneity of study designs, populations, and outcomes, findings were synthesized narratively. Six major themes emerged: disrupted access to routine care, interruptions to diagnostics and monitoring, medicine supply chain challenges, adoption of remote care models, health equity impacts, and clinical outcome implications. The pandemic was associated with widespread barriers to healthcare access, diagnostic delays, and medication shortages, with the implementation of innovations such as telemedicine and community-based delivery often hindered by technological and resource limitations. COVID-19 significantly disrupted NCD care across SSA, though health systems demonstrated notable capacity for adaptation, emphasizing the need for resilient service delivery models and equity-focused monitoring to safeguard care during future health emergencies.