State of CT Immunization Requirements

PRESCHOOL

• Hepatitis 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
• Pneumococcal: 1 dose on or after 1st birthday
• 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

• Hepatitis 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-1 st dose on or after 1stbirthday; 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
• Hib: 1 dose on or after 1st birthday for children less than 5 years old
• Pneumococcal: 1 dose on or after 1st birthday for children less than 5 years old

GRADES 1-6

• Hepatitis 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-1 st dose on or after 1stbirthday; 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

• Hepatitis B: 3 doses, last dose on or after 24 weeks of age
• Tdap/Td: 1 dose for students who have completed their primary DTaP series. Students who start the series at age 7 or older only need 3 doses of 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-1 st 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
• Meningococcal: 1 dose

 

• DTaP vaccine is not administered on or after the 7th birthday.
• Tdap can be given in lieu of Td vaccine for children 7 years and older unless contraindicated.
• Hib is NOT required once a student turns 5 years of age.
• Pneumococcal conjugate is NOT required once a student turns 5 years of age.
• Influenza is NOT required once a student turns 5 years of age.
• HepA requirement for school year 2024–2025 applies to all Pre-K through 12 th graders born 1/1/07 orlater.
• HepB requirement for school year 2024–2025 applies to all students in grades K–12. Spacing intervals for a valid HepB series: at least 4 weeks between doses 1 and 2; 8 weeks between doses 2 and 3; at least 16 weeks between doses 1 and 3; dose 3 must be administered at 24 weeks of age or later.
• Second MMR for school year 2024–2025 applies to all students in grades K–12.
• Meningococcal conjugate requirement for school year 2024–25 applies to all students in grades 7–12.
• Tdap requirement for school year 2024–2025 applies to all students in grades 7–12.
• If two live virus vaccines (MMR, varicella, MMRV, intranasal influenza) are not administered on the same day, they must be separated by at least 28 days (there is no 4 day grace period for live virus vaccines). If they arenot separated by at least 28 days, the vaccine administered second must be repeated.
• \Lab confirmation of immunity is only acceptable for HepA, HepB, measles, mumps, rubella, andvaricella.
• VERIFICATION OF VARICELLA DISEASE: confirmation in writing by a MD, PA, or APRN that the child hasa previous history of disease, based on family or medical history.

Vaccines supplied by the State of Connecticut listing, along with brand names.