Tdap is an inactivated vaccine that protects you against three different illnesses: tetanus, diphtheria, and pertussis. Pertussis is commonly known as whooping cough. The Tdap vaccine is recommended between 27 and 36 weeks of pregnancy. The main reason any vaccine is recommended during pregnancy is for the passive immunity your baby receives. Vaccines are a complex and often controversial topic. This episode follows a systematic approach that includes thorough research to evaluate the safety and efficacy of the Tdap vaccine.     Thank you to our sponsor   Zahler goes above and beyond to use high-quality bioavailable ingredients like the active form of folate, bioavailable iron, and omega 3s. The Zahler Prenatal +DHA is my #1 recommendation for a high-quality prenatal vitamin. In October 2024, you can save 40% off the Zahler Prenatal +DHA on Amazon with the code PREPOD40. You can always see the current promo code for the Zahler prenatal vitamin by clicking here.     Read the full article and resources that accompany this episode.     Join Pregnancy Podcast Premium to access the entire back catalog, listen to all episodes ad-free, get a copy of the Your Birth Plan Book, and more.     Check out the 40 Weeks podcast to learn how your baby grows each week and what is happening in your body. Plus, get a heads up on what to expect at your prenatal appointments and a tip for dads and partners.     For more evidence-based information, visit the Pregnancy Podcast website.