Pregnant and Lactating Persons

Why is immunization important before and during pregnancy?

Immunization provides protection against disease that can cause serious harm. Anyone who is pregnant and who is immunized who is immunized not only protects themselves, but passes on the protection to the baby. The protection continues to be shared with the baby through breastfeeding, but this protection is not long term, and wanes (which is why it is important that babies get immunized too). Staying up to date on your immunizations and getting immunized during pregnancy is especially important to prevent diseases that can cause complications. Talk to your health care provider about your immunization status and the vaccines that may be recommended for you.

Is immunization safe during pregnancy?

Immunization during pregnancy is safe and is the best way to protect the pregnant person and baby from disease that could otherwise cause harm. Some vaccines are recommended before pregnancy, and others are safe to take during pregnancy. Vaccines recommended before pregnancy include live/attenuated vaccines, while inactive vaccines can generally be given during pregnancy.

All vaccines are safe to take while lactating.

Vaccines to consider before and during pregnancy

Staying up to date on your immunizations before and during your pregnancy is important in maintaining your health and the health of your baby. Before planning a pregnancy, make sure you are up to date on all adult immunizations. Some vaccines are especially important during pregnancy, such as the influenza vaccine.

During your pregnancy is also a great time to learn about the vaccines that your baby will need to stay healthy. Consult A Parent’s Guide to Vaccination (Public Health Agency of Canada) to learn about these vaccines. Talk to your health care provider about your immunization status and the vaccines that may be recommended for you and your baby.

Vaccine to consider before pregnancy or right after delivery:

Measles, mumps, and rubella vaccine

Vaccines to consider before and during pregnancy:

Hepatitis A and hepatitis B vaccine
Seasonal influenza vaccine
Tetanus, diphtheria and pertussis

Some people may need to consider other vaccines before, during, and after pregnancy. Talk to your health care provider to learn more.

For more information, visit the Society of Obstetricians and Gynaecologists of Canada's website: