How are health systems in sub-Saharan Africa adapting to protect human health from climate change threats? A scoping review and case study.

BACKGROUND: Sub-Saharan Africa stands out as one of the regions most affected by the climate crisis, while it has contributed to the problem only marginally. The foreseen negative effect on health adds great stress to the already overburdened health systems. Health systems' adaptation to climate change is, therefore, urgently needed to better protect human health. There is, however, scant evidence on how adaption is being planned and implemented in Africa. The aim of this study was to review the literature on health system adaptation in sub-Saharan Africa.

METHODS: In this scoping review and case study, we first carried out the scoping review, searching for publications on adaptation measures using the PubMed, Science Direct, and Web of Science databases on July 1, 2023. We included papers in English and French that addressed the adaptation of health systems in countries in sub-Saharan Africa without time limit. Second, we did a case study of the design and implementation of the National Adaptation Plan of Benin, with a specific focus on the policy-making process underlying the plan, whereby we used the health policy triangle as a policy analysis framework. Data were collected through a document review of national policy plans, reports, and evaluations.

FINDINGS: A total of 14 papers met the inclusion criteria, showing that climate change adaptation remains a niche in the literature for sub-Saharan Africa. Most included papers were authored by individuals from high-income countries. Health system adaptation measures cover seven domains: health systems strengthening; policy and planning; financing and implementation; information and capacity building; societal resilience; disaster risk prevention, preparedness, response, and recovery; and mitigation. The review found that the dominant role of global agencies in supporting or steering health system adaptation planning contributes to policy mimicry across countries, as confirmed by the case study of the adaptation plan in Benin. Benin's National Adaptation Plan prioritised three climate hazards: heat, drought, and flooding. Although the financial and technical inputs of international agencies effectively support Benin's adaptation planning, these inputs might induce a more narrow focus that does not fully respond to Benin's needs in terms of climate shocks and adaptation priorities.

INTERPRETATION: Health systems in sub-Saharan Africa are already adapting to climate change. Future research could focus on how national governments could develop adaptation plans that are responsive to local needs by making the needs analysis and priority-setting processes more inclusive of local stakeholders.

FUNDING: The Belgian Directorate-General for Development Cooperation and Humanitarian Aid.