Routine vaccination

• 5-dose series at age 2, 4, 6, 15–18 months, 4–6 years
  - Prospectively: Dose 4 may be administered as early as age 12 months if at least 6 months have elapsed since dose 3.
  - Retrospectively: A 4th dose that was inadvertently administered as early as age 12 months may be counted if at least 4 months have elapsed since dose 3.

Catch-up vaccination

• Dose 5 is not necessary if dose 4 was administered at age 4 years or older and at least 6 months after dose 3.

Special situations

• Wound management: in children less than age 7 years with history of 3 or more doses of tetanus-toxoid-containing vaccine: For all wounds except clean and minor wounds, administer DTaP if more than 5 years since last dose of tetanus-toxoid-containing vaccine.