RESUMEN
BACKGROUND: Immunization is a cost-effective public health strategy to reduce vaccine preventable disease, especially in childhood. METHODS: This paper reports the philosophy, service delivery, achievements and lessons learned from an immunization program in rural Nigeria privately financed via a corporate social responsibility initiative from GlaxoSmithKline Biologicals. RESULTS: The immunization program served the community for a 16-y period extending from 1998 until 2015, resulting in an increase in age-appropriate immunization coverage from 43% to 78%. CONCLUSION: In its success, this immunization program exemplified the importance of early and sustained community engagement, integration of strategies to optimize implementation outcomes and effective team building well before some of these principles were accepted and codified in the literature. The project also underscores the important role that the private sector can bring to achieving critical immunization goals, especially among underserved populations and provides a model for successful public-private partnership.