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Colorado Immunization Information System



Keeping track of shot records has never been easier! By participating in the Colorado Immunization Information System (CIIS), healthcare professionals, parents and individuals can rest assured that their immunization records are safe and complete.


CIIS is a confidential, population-based, computerized system that collects and disseminates consolidated immunization information for Coloradans of all ages.


Operated by the Colorado Immunization Section at the Colorado Department of Public Health and Environment, CIIS enables any immunization provider in Colorado to electronically track immunizations a person has received, thereby maintaining an ongoing and complete record to ensure that the person receives all recommended shots in a timely manner.


An immunization information system is an important tool to increase and sustain high immunization coverage rates by consolidating immunization records from multiple providers, allowing providers to generate recall notices for individuals who are not up-to-date, minimizing over-immunization, and identifying missed opportunities for immunization. CIIS meets the guidelines for immunization information system functionality developed by the Centers for Disease Control and Prevention.


Although CIIS is exempt under the Health Insurance Portability and Accountability Act (HIPAA) as a public health authority, we strive to maintain the highest level of compliance with HIPAA regulations. Please visit our Confidentiality webpage for more information on CIIS and HIPAA.


CIIS is endorsed by the Colorado Chapter of the American Academy of Pediatrics, the Colorado Academy of Family Physicians, the Colorado Children's Immunization Coalition, and the Colorado Adult Immunization Coalition as the statewide immunization registry in Colorado.


NEW! The CIIS Inventory Reconciliation and Vaccine Ordering Module trainings can be accessed here.


Complete the CIIS Implementation Documents to join CIIS today!

Find out how Child Care Centers and Schools can join CIIS here