How are Sentinel Sites Selected?
IISs chosen as Sentinel Sites have been state or large urban systems. There are two types of sentinel sites: capacity-building and implementation sites. Capacity-building sites primarily work to meet data quality Registry/IIS Certification Standards and provide support for routine analysis of immunization IIS data. Sites receiving capacity-building funds collect timely and complete immunization histories in a specific geographic area with at least 10,000 children <6 years of age actively participating. Implementation sites accurately assess trends in vaccination coverage for all children in a study population and provide data for public health decision making. Sites receiving implementation funds focus on a larger population (>200,000 children <18 years of age).
