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ABSTRACT Introduction To describe vaccine stock-outs at national, district, and health facility levels in the WHO African region. Areas covered We conducted a systematic review to identify studies reporting on vaccine stock-outs at national, district, and health facility levels in 47 African countries. We searched both published and unpublished literature, including the WHO/UNICEF Joint Reporting Form (JRF), for eligible studies. Expert opinion Countries within the WHO African region continue to face the challenge of vaccine stock-outs at national, district, and health facility levels and this impacts on the delivery of immunization services. The frequency and the proportion of stock-outs vary between countries and between regions within a country. Countries need to put more efforts toward finding lasting solutions to vaccine shortages. We look forward to having more countries reporting vaccine stock-outs especially at the health facility level. Furthermore, countries are currently exploring different approaches for improving vaccine stock management. It is expected that in half a decade from now, more well-designed studies will be available that will inform decision-making