WebMD Medical Team
A number of vaccines, especially live-virus vaccines, should not be given to pregnant women, because they may be harmful to the baby. (A live-virus vaccine is made using the live strains of a virus.) Some vaccines can be given to the mother in the second or third trimester of pregnancy, while others should only be administered either at least three months before or immediately after the baby is born.
Why Should Pregnant Women Be Vaccinated?
Many women may not realize that they are not up-to-date on their immunizations and are susceptible to diseases that can harm them or their unborn child. Pregnant women should talk to their doctors to figure out which vaccines they may need and whether they should get them during pregnancy or wait until after their child is born.