Learning-by-Doing to Adapt a Digital Community Engagement Strategy for Identifying and Reaching Zero-Dose Children in Kano State, Nigeria: A Program Case Study

Background: Kano State has one of the highest concentrations of zero-dose (ZD) children in Nigeria, challenging equitable immunization coverage. Digital engagement tools meant to strengthen timely data to address such gaps often underperform due to limited adaptability to user needs. Learning-by-doing (LxD), which brings together human-centered design and adaptive management, offers more context-responsive solutions. Intervention and Implementation Approach: MCH-Track, a digital platform for tracking and referral for childhood vaccinations was used by 56 female community mobilizers in two loca

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