USIISWelcome to the Utah Statewide Immunization Information System (USIIS) The Utah Statewide Immunization Information System (USIIS) is a secure, confidential immunization information system that helps healthcare providers, schools, child care centers and Utah residents maintain consolidated immunization histories. In May of 2023 we migrated to AWS (Amazon Web Services). Check out our migration flyer if you would like to learn … Continue reading USIIS