Immunize Colorado was first formed in 1991 in response to the alarming fact that only about 50 percent of children in our state were adequately immunized. A group of concerned physicians, insurance providers, parents and state officials met to strategize and develop a plan to improve and sustain childhood immunization rates in Colorado. As part of that strategy, the Colorado Children's Immunization Coalition incorporated as a 501c(3) nonprofit organization in 1999. In 2020, the Colorado Children's Immunization Coalition transitioned to Immunize Colorado to renew and reinforce our organization's commitment to protecting Coloradans across the lifespan from vaccine-preventable diseases.

Since its inception, Immunize Colorado has served as the only statewide independent nonprofit organization dedicated to protecting children, families and the Colorado community from vaccine-preventable disease. As part of our promise to not benefit financially from the programs and services we promote, Immunize Colorado does not accept any funding from vaccine manufacturers or distributors.