Fact Sheet: Colorado Senate Bill 20-163 – What Does the Law Mean?

Senate Bill 20-163: School Entry Immunization aims to keep Colorado communities protected from vaccine-preventable diseases by modernizing school entry immunization requirements. The bill was signed into law by Governor Polis on June 26, 2020 and took effect during the 2021-22 school year. Supported by the vast majority of Colorado voters, strengthening Colorado’s immunization law was a long-awaited policy solution. Read more about what this law means for parents/caregivers, schools, child care centers, and health care providers.