Global Health Science and Practice February 2022, https://doi.org/10.9745/GHSP-D-21-00237 Key Findings: Exposure to vaccination information from faith leaders and health facilities was associated with increased likelihood of vaccination uptake. The significant association between exposure to a greater number of immunization information sources and increased likelihood of vaccination uptake reinforces the need for multiple sources to provide consistent and accurate immunization information to facilitate positive vaccination behavior. Key Implications: Social and behavior change communication interventions may optimize the promotion of immunization services through multiple information sources such as health facilities and community-based assets including faith leaders and lay community health workers. Religion and faith play an important role in how people understand health and make health decisions. In Sierra Leone and other similar settings, interventions to improve uptake of immunization services may be enhanced by proactively engaging faith leaders.