tdap booster 加强针要几岁打

去美国的时候，带上你们已经打过的绿色疫苗本。如果正常都打过了。就没什么好补的了。
下面是孩子需要的疫苗。
Vaccinations required for children enrolling in childcare facilities, pre-school, pre-Kindergarten:
Diphtheria-Tetanus-Pertussis (DTaP, or DT if appropriate)
Poliomyelitis (IPV or OPV)
Measles, Mumps, Rubella (1 dose of each, usually given together as MMR)
Varicella (1 dose or history of disease)
Haemophilus influenzae type B (Hib): age younger than 5 years only
Hepatitis B (HBV)
Pneumococcal conjugate vaccine (PCV): age younger than 5 years only
Hepatitis A: 1 dose, required by 18 months of age or older
Children enrolling in Kindergarten:
Diphtheria-Tetanus-Pertussis (DTaP, or DT if appropriate)
Hepatitis B (HBV)
Measles, Mumps, Rubella (2 doses of each, usually given together as MMR)
Poliomyelitis (IPV or OPV): final dose on or after the 4th birthday
Varicella (2 doses or history of disease)
Hepatitis A: total of 2 doses, spaced at least 6 months apart
All children entering 7th grade (including currently enrolled students):
Tetanus-diphtheria-pertussis booster (“Tdap”): not required if a Td
booster dose given less than 5 years before 7th grade entry is recorded
on the DTaP/Td
Verification of immunity to varicella: 2 doses or history of disease
Children who are new enrollees in a TN school in grades other than Kindergarten or 7th:
Diphtheria-Tetanus-Pertussis (DTaP, or DT if appropriate).