UCHealth hospitals and clinics enter vaccine information for you and your child into the Colorado Immunization Information System (CIIS), a confidential, secure, statewide immunization registry.

Under Colorado law, you can remove your/your child’s immunization information from the CIIS at any time. This is called an opt-out.

If you change your mind, you can have your health care provider re-enter your/your child’s immunization record into CIIS at a later time by submitting a rescind opt-out form.

CIIS opt-out & rescind opt-out procedures

Visit this web page on the CIIS website >

If you choose not to participate in CIIS, you’re responsible for keeping track of your/your child’s immunization record.​​

Want to learn more about the Colorado Immunization Information System?

Visit this web page on the CIIS website >