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.
For more information visit the CIIS website here.
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.