Evidence Action, a high-impact global non-profit organization renowned for scaling cost-effective, evidence-based development programs to improve health and livelihoods for hundreds of millions of people, officially issued a competitive Request for Proposals (RFP) on 08 September 2026 seeking an accredited research consulting firm or health evaluation consortium to execute a comprehensive 'Baseline Assessment for Immunization Demand Generation' across Nasarawa and Oyo States, Nigeria.

INTRODUCTION

Evidence Action, a high-impact global non-profit organization renowned for scaling cost-effective, evidence-based development programs to improve health and livelihoods for hundreds of millions of people, officially issued a competitive Request for Proposals (RFP) on 08 September 2026 seeking an accredited research consulting firm or health evaluation consortium to execute a comprehensive 'Baseline Assessment for Immunization Demand Generation' across Nasarawa and Oyo States, Nigeria.

Routine childhood immunization remains one of the most cost-effective global health interventions; however, in Nigeria, vaccine uptake is constrained by complex behavioral, structural, and cultural barriers—including caregiver vaccine hesitancy, clinic accessibility challenges, stockout misperceptions, and gendered intra-household decision-making dynamics. Under its innovative Immunization Demand Generation program, Evidence Action is testing targeted behavioral nudge interventions, community health worker engagement models, and conditional incentives to dramatically increase completion rates for early childhood vaccine schedules (BCG, Pentavalent, Measles, and Yellow Fever).

With proposal submissions closing on Sunday, 20 September 2026 at 05:00 PM West Africa Time (WAT) via email to procurement.nigeria@evidenceaction.org, prospective research consultancies and public health institutes must assemble rigorous proposals rapidly. This procurement provides a prestigious opportunity for health research firms, academic epidemiology departments, and statistical survey agencies to partner with an internationally acclaimed global health leader. This TenderMan procurement report delivers an exhaustive analysis of the sampling methodology, mandatory budget templates, behavioral frameworks, and winning bid formulations.

QUICK TENDER OVERVIEW

The primary purpose of this consultancy is to design, pilot, execute, and analyze a rigorous baseline household assessment across selected rural, peri-urban, and urban Local Government Areas (LGAs) in Nasarawa and Oyo States. The study will establish pre-intervention benchmark indicators measuring caregiver knowledge, attitudes, social norms, clinic access barriers, and verified vaccination coverage among children aged 0 to 23 months.

Unlike routine health surveys, this research integrates advanced behavioral science models (such as the Behavioral and Social Drivers of Vaccination - BeSD framework) to isolate specific psychological and environmental determ