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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.