Integrating Circular Economy Principles into Vaccine Logistics: Strategies for Enhancing Sustainability and Resource Efficiency in Cold Chain Operations

Vaccines are essential life-saving interventions that prevent between 3.5 million to 5 million deaths each year by protecting people of all ages against more than 20 life-threatening diseases through immunization (World Health Organization, n.d.). Despite their positive contribution to public health, vaccination programs unintentionally contribute to the substantial generation of biomedical and plastic-related waste (Chen et al., 2025). Every stage of the vaccine lifecycle from production and distribution to delivery and waste disposal consumes resources and contributes to environmental pollution. These processes generate greenhouse gas emissions and pose sustainability challenges (Klemeš et al., 2021; Sukkar, 2024).
Logistics and vaccine distribution especially cold chain operations, have significant energy and environmental impacts, contributing around 1% of global greenhouse gas (GHG) emissions. In developed countries, this share is even higher ranging between 3% to 3.5% of total emissions (Klemeš et al., 2021). Vaccine distribution requires significantly more fuel compared to standard distribution operations due to the need to maintain strict temperature controls. This increased fuel usage leads to higher exhaust emissions, which in turn places a greater environmental burden (Yu et al., 2023). Sub-Saharan Africa is faced with significant challenges in vaccine distribution due to infrastructural deficiencies including unreliable electricity, inadequate cold storage facilities as well as underdeveloped transportation networks (Chhabra & Singh, 2022).
The current model of vaccine logistics is heavily reliant on single-use packaging, which follows a traditional 'take-make-dispose' approach. This model contributes significantly to the generation of waste, resource depletion, and environmental degradation, making it not only inefficient but also unsustainable (Groenewald et al., 2024; Tura et al., 2019). Disposal of vaccine vials and syringes most of which end up in landfills raises serious environmental concerns (Klemeš et al., 2021). This practice is no longer considered sustainable because it depletes natural resources which leads to higher extraction costs for raw materials while also contaminating the soil, water, and air (Ullah et al., 2021).
A sustainable vaccine supply chain is essential for the efficient and responsible distribution of vaccines during both routine immunization programs and outbreak responses. It requires a balanced integration of economic, environmental, and social factors to ensure comprehensive and effective delivery (Yadav & Kumar, 2023). An effective vaccine supply chain must always ensure the availability of vaccines in the right quantity and quality while balancing cost efficiency and minimizing environmental impact (Andoh & Yu, 2023). Green logistics is a key component of sustainable supply chain management and a driving force behind the circular economy (CE), with reverse logistics being vital for achieving sustainability by closing material cycles and reducing emissions (de Souza et al., 2022).
To improve sustainability in vaccine distribution, the pharmaceutical sector must adopt and prioritize eco-friendly practices in supply chain management. This shift is driven by the growing emphasis on environmental responsibility, the impacts of climate change, and the urgent need to transition to sustainable, low-carbon operational models (Groenewald et al., 2024; S & Khandare, 2024; Schneikart et al., 2024). Since approximately 85% of medical waste is non-hazardous, properly managing these materials through collection, disinfection, and storage could enable recycling thereby reducing their environmental impact and promoting sustainability (Klemeš et al., 2021).