Description of the immunization information database: a tool for investigating allegations made against childhood immunizations

This paper describes the Immunization Information Database (IID). The IID is designed for cataloguing and systematically analyzing allegations that give rise to public concern regarding the safety, efficacy, and appropriateness of routine childhood immunizations. We describe the IID's eight data tables (Immunization Type; Claim; Claim Basis; Claimant; Source Documentation; Source Type; Claim Analysis; and Claim Analysis Type), and explain how these tables function to create a conceptual map of existing allegations.