The Tdap (tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis) vaccine is recommended during pregnancy between 27 and 36 weeks of gestation, which typically falls within the seventh and eighth months of pregnancy.
Obstetric care providers should administer the Tdap vaccine to all pregnant patients during each pregnancy, as early in the 27–36-weeks-of-gestation window as possible.
