Immunization Requirements for Enrolled Students in Connecticut Schools for the 2024-2025 School Year (view PDF version here)
Preschool
Hep B: 3 doses, last one on or after 24 weeks of age
DTaP: 4 doses (by 18 months for programs with children 18 months of age)
Polio: 3 doses (by 18 months for programs with children 18 months of age)
MMR: 1 dose on or after 1st birthday
Varicella: 1 dose on or after 1st birthday or verification of disease
Hepatitis A: 2 doses given six calendar months apart, 1st dose on or after 1st birthday
HiB: 1 dose on or after 1st birthday (may have more)
Pneumococcal: 1 dose on or after 1st birthday (may have more)
Influenza: 1 dose administered each year between August 1st - December 31st (2 doses separated by at least 28 days required for those receiving flu for the first time)
Kindergarten
Hep B: 3 doses, last dose on or after 24 weeks of age
DTaP: At least 4 doses. The last dose must be given on or after 4th birthday
Polio: At least 3 doses. The last dose must be given on or after 4th birthday
MMR: 2 doses separated by at least 28 days, 1st dose on or after 1st birthday
Varicella: 2 doses separated by at least 3 months - 1st dose on or after 1st birthday or after verification of disease; 28 days between doses is acceptable if the doses have already been administered
Hepatitis A: 2 doses given six calendar months apart; 1st dose on or after 1st birthday
Hib: 1 dose on or after 1st birthday (may have more)
Pneumococcal: 1 dose on or after 1st birthday (may have more)
Grades 1-6
Hep B: 3 doses, last dose on or after 24 weeks of age
DTaP/Td: At least 4 doses. The last dose must be given on or after 4th birthday. Students who start the series at age 7 or older only need a total of 3 doses.
Polio: At least 3 doses. The last dose must be given on or after 4th birthday
MMR: 2 doses separated by at least 28 days, 1st dose on or after 1st birthday
Varicella: 2 doses separated by at least 3 months-1st dose on or after 1st birthday; or verification of disease. 28 days between doses is acceptable if the doses have already been administered.
Hepatitis A: 2 doses given six calendar months apart, 1st dose on or after 1st birthday
Grades 7-12
Hep B: 3 doses, last dose on or after 24 weeks of age
Tdap/Td: 1 dose for students who have completed their preliminary DTaP series. Students who start the series at age 7 or older only need 3 doses tetanus-diphtheria containing vaccine, one of which must be Tdap
Polio: At least 3 doses. The last dose must be given on or after 4th birthday
MMR: 2 doses separated by at least 28 days, 1st dose on or after 1st birthday
Varicella: 2 doses separated by at least 3 months - 1st dose on or after 1st birthday; or after verification of disease. 28 days between doses is acceptable if the doses have already been administered.
Hepatitis A: 2 doses given six calendar months apart; 1st dose on or after 1st dose
Meningococcal: 1 dose; Students should receive conjugate vaccine
