Which vaccine is contraindicated during pregnancy?

The MMR (measles, mumps, rubella) vaccine is contraindicated during pregnancy due to its use of live attenuated viruses. Live vaccines can pose a risk to the developing fetus, as they may potentially cause infections in pregnant individuals, which could lead to adverse outcomes such as congenital defects or miscarriage. Therefore, it is recommended that women either be vaccinated before pregnancy or wait until after they have given birth to receive this vaccine.

In contrast, the DTP (Diphtheria, Tetanus, Pertussis) vaccine is generally considered safe during pregnancy, especially in the later trimesters, as it helps to protect both the mother and the baby from these diseases. The influenza vaccine is also recommended during pregnancy to protect the mother and reduce the risk of complications from influenza. Likewise, the Hepatitis B vaccine is safe during pregnancy and is often recommended for women in high-risk groups to prevent potential transmission to the infant.