administration is dependent on the risk of infection vs. risk of immunization complications
safe: tetanus toxoid, diphtheria, influenza, hepatitis B, pertussis
avoid live vaccines (risk of placental and fetal infection): polio, measles/mumps/rubella, varicella
contraindicated: oral typhoid; measles, mumps, and rubella (MMR)
the public health agency of Canada recommends:
all pregnant women receive the influenza vaccine
all pregnant women at 26 weeks of pregnancy or later, who have not received a dose of pertussis containing vaccine in adulthood, should receive Tdap vaccination in pregnancy
rubella vaccine for all non-immune mothers
hepatitis B vaccine should be given to infant within 12 h of birth if maternal status unknown or positive
follow-up doses at 1 and 6 mo
any vaccine required/recommended is generally safe postpartum