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I have a pregnant patient who is 26 weeks along and received a Tdap vaccine 2 1/2 months ago because of healthcare employment. Normally we give our pregnant patients Tdap between 27–36 weeks as recommended. Should we give her another dose of Tdap when she reaches 27 weeks gestation?

If Tdap is administered earlier in pregnancy, it should not be repeated between 27 and 36 weeks’ gestation; only one dose is recommended during each pregnancy.

Last reviewed: October 31, 2023

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