In 2019, 79% of all 2-year-olds in Colorado were fully immunized, receiving the combined 6-vaccine series. More than one in five of Colorado’s 2-year-olds is not fully protected from preventable diseases like polio, mumps, measles and whooping cough. To find out how our state’s immunization rate for young children has fluctuated over the last few years, please visit the KIDS COUNT Data Center.
