The Needle-Free Tropis Device for Polio Vaccination Project, titled “Evaluating the impact of an Intradermal Needle-free Delivery Device on a Polio Routine Immunization Program,” is a collaborative effort between Jhpiego Nigeria, Sydani Group, PATH and the National Primary Healthcare Development Agency (NPHCDA), with funding from USAID Washington through Pharmajet. The project aims to implement the use of needle-free Tropis devices for the administration of polio vaccinations in Oyo and Kano States. This is a stratified-pair, cluster randomized study. The objective is to evaluate the impact of this new technology on the efficiency, coverage, programmatic feasibility and sustainability for the introduction of Tropis IPV delivery into the Nigerian Expanded Immunization program, while reducing the risks associated with needle-based injections. We therefore seek to recruit individuals to support the implementation of the study in 26 intervention and control facilities across three Local Government Areas (Atiba, Ibadan North, and Iseyin) in Oyo State.