Tdap vaccine

Routine vaccination:

• Minimum age: 7 years (Adacel® is approved for 11-64 years by ACIP and 4 to 64 year old by FDA, while Boostrix® is approved for 10 years and older by ACIP and 4 years of age and older by FDA in US).
• Administer 1 dose of Tdap vaccine to all adolescents aged 11 through 12 years.
• Tdap during pregnancy: One dose of Tdap vaccine to pregnant mothers/adolescents during each pregnancy (preferred during 27 through 36 weeks gestation) regardless of number of years from prior Td or Tdap vaccination.

Catch-up vaccination

• Catch up above 7 years: Tdap, Td, Td at 0, 1 and 6 months.
• Persons aged 7 through 10 years who are not fully immunized with the childhood DTwP/DTaP vaccine series, should receive Tdap vaccine as the first dose in the catch-up series; if additional doses are needed, use Td vaccine.
• Persons aged 11 through 18 years who have not received Tdap vaccine should receive a dose of Tdap. Tetanus and Diphtheria toxoids (Td) booster doses are recommended every 10 years thereafter.
• Tdap vaccine can be administered regardless of the interval since the last tetanus and diphtheria toxoid–containing vaccine.

Tdap vaccine should not be used as second booster for DTP series.