infectious diseases
Diphtheria Tetanus Pertussis Vaccine
Dose and Administration of Diphtheria Tetanus Pertussis Vaccine
The dose for DTaP or Tdap is 0.5 mL IM. The DTaP vaccine is given as 5 primary and 1 booster IM injections during childhood as follows: at age 2 months, 4 months, 6 months, 15 to 18 months, and 4 to 6 years (before school entry). The fifth dose is not necessary if the fourth dose was given at age ≥ 4 years and at least 6 months after the third dose. A single booster of Tdap is given, except for pregnant women, who should have a dose duringeachpregnancy, preferably at 27 to 36 weeks gestation. Pregnant women should have a booster dose of Tdap duringeachpregnancy. 