<unk> , that is the administration of a vaccine to a pregnant woman, is not a routine event as it is generally preferred to administer vaccines either prior to conception or in the postpartum period. When widespread vaccination is used, the risk for an unvaccinated  pregnant patient to be exposed to a related infection is low, allowing for postponement, in general, of routine vaccinations to the postpartum period. 
Nevertheless,<unk>  may occur either inadvertently, or be indicated in a special situation, when it appears prudent to reduce the risk of a specific disease for a potentially exposed pregnant woman or her fetus.
As a rule of thumb the vaccination with live virus or bacteria is contraindicated in pregnancy.
Immunization during pregnancy
Syphilis management during pregnancy
High risk pregnancy
Anticoagulation in pregnancy
Maternal immunization
Cardiac disease in pregnancy
Choking in an infant under 1 year
Choking in an adult or child over 1 year