Effectiveness of Follow-Up Mass Vaccination Campaigns Against Measles and Rubella to Mitigate Epidemics in West Africa (2024–2025): A Cross-Sectional Analysis of Surveillance and Coverage Data

Suboptimal campaign quality, gaps in immunity beyond target age groups, and unreliable administrative data contributed to the persistence of outbreaks. Recommendations include extending Measles vaccination campaigns to older children (5-14 years), improving preparedness by drawing on experiences from other programs such as polio, standardizing PCCS data survey and analysis methodologies across all countries, and integrating Measles vaccination campaigns with other services such as nutrition.