Colorado 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 helps healthcare providers, schools, childcare centers, universities, and individuals keep track of the shots that they and/or their children have received.
CIIS is a program within the Colorado Immunization Section at the Colorado Department of Public Health and Environment (CDPHE). CIIS is a lifelong immunization record tracking system under the Colorado Immunization Registry Act of 2007.
Learn more information on the CIIS program website.
To exclude yours or your child’s information from CIIS, visit the CIIS opt-out procedures web page to opt out of the registry. You will also find information on how to rescind a prior opt out.