Children must meet minimum Colorado law immunization requirements as outlined below:
|Vaccine||Number of doses required for preschooler 3-4 years old|
|*Haemophilus Influenzae type B (HIB)||1-4|
*Haemophilus influenzae type B (Hib): If any dose is given at or after 15 months of age, the Hib vaccine requirement is met. For students who begin the series before 12 months of age, 3 doses are required of which at least 1 dose must be administered on or after the 1st birthday. If the first dose is given at 12-14 months, 2 doses are required. If the child is over 5 years of age, no new or additional doses are required.
**Measles, mumps, rubella (MMR) & Varicella (Chickenpox): The first dose of measles, mumps and rubella vaccine and varicella vaccine must have been administered on or after 12 months of age (1st birthday) to be acceptable.