This document provides an overview and specifications for adding immunization tracking functionality to an electronic health record system. Key features include allowing users to add reported immunizations, decline immunizations for visits, and stop tracking immunizations. Immunization data will be stored and managed through the Master Immunization Schedule (MIS) component. Reports and the interface to public health agencies will be updated to reference the new immunization data location. Physicians and nurses will be the primary users of the new immunization tracking functionality.