This picture tells an important story. Ellen Wild and Amy Metroka were brought together 16 years ago as members of the RWJF-funded program All Kids Count. The purpose of the program was to develop immunization registries to improve the health of preschool children by providing timely, accurate information about their immunizations. All Kids Count was instrumental in the development of immunization registries — one of the first widely-implemented public health information systems — and in the development of integrated child health information systems.