Colorado Immunization Information System

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. 

Colorado Immunization Information System

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.