This data flow diagram illustrates how childhood immunization information moves across providers, health plans, registries, and other care partners. It is designed to help teams understand where immunization data originates, how it is exchanged, where gaps or delays may occur, and which workflow steps affect record completeness and measure performance. Practices and partners can use this resource to identify opportunities to improve data sharing, reduce duplicate or missing records, strengthen coordination across organizations, and support more accurate immunization tracking and reporting.