Medical Waste Management in Contemporary Health Systems: A Narrative Review

Abstract

Medical waste is a heterogeneous stream generated by hospitals, laboratories, blood banks, veterinary facilities, research centers, emergency services, and community-based care. Its management has direct implications for infection prevention, occupational safety, environmental protection, and health-system resilience. This narrative review synthesizes peer reviewed evidence and official guidance on medical-waste classification, generation rates, management practice, treatment technologies, environmental and health impacts, and selected regulatory approaches. The reviewed evidence confirms that most health-care waste is non-hazardous, while a smaller hazardous fraction accounts for most infection, sharps-injury, toxic-exposure, and emission risks. Reported generation rates vary widely by region, income setting, service profile, and segregation quality. Across sources, the most consistent determinants of safe performance are segregation at source, puncture-resistant sharps containment, secure internal transport, staff training, vaccination, auditable records, and treatment selection according to waste type. Steam-based and other non-burn technologies are appropriate for many infectious waste streams when operation, validation, and downstream disposal are reliable, whereas modern high-temperature incineration remains relevant for selected pathological, pharmaceutical, and cytotoxic wastes. Poorly controlled burning, untreated disposal, and pharmaceutical leakage are associated with air pollution, water contamination, antimicrobial-resistance pathways, and preventable worker exposure. Sustainable improvement requires integrated regulation, routine measurement, trained personnel, and procurement practices that reduce avoidable waste while preserving infection-control standards.