The ֱ Immunization Information System (CIIS) is a confidential, population-based, computerized system that collects and consolidates vaccination data for Coloradans of all ages from a variety of sources.
CIIS is a program within the ֱ Immunization Section at the ֱ Department of Public Health and Environment (CDPHE).
CIIS helps healthcare providers, schools, childcare centers, universities, and individuals keep track of the shots that they and/or their children have received.
You can choose to exclude your/your child’s information (“opt-out”) from CIIS at any time. From the CIIS website, choose the “Policies and Procedures” link to access Opt-out procedures information.
CIIS Information, Opt-Out Procedures, and CIIS Frequently Asked Questions can be found at the link below.