Evaluation of immunization service delivery in primary healthcare centers in Akinyele and Lagelu local government areas, Oyo State, Nigeria

While previous studies have documented funding and cold chain gaps, this study uniquely demonstrates how localized Basic Healthcare Provision Fund access specifically stabilizes outreach but fails to address workforce and infrastructure deficits. Expansion of Basic Healthcare Provision Fund-like financing across primary healthcares, transition to permanent, competitively compensated immunization staff, investment in renewable-energy cold chain technologies, and integration of community-driven outreach into the existing healthcare framework will improve immunization service delivery.