Varies: Most inactivated (killed) vaccines like the injected flu and TdaP are safe at any stage of pregnancy. Some like MMR,varicella or the live weakened Flu-mist, are avoided due to a remote possibility of fetal harm.Some practitioners just avoid any in the first 12 weeks out of a sense of caution while the fetus is in its critical formative stage.
Answered 8/20/2016
3.6k views
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question