Overdue vaccinations with inactivated vaccines may be safely administered to pregnant women, according to current recommendations in the second and third trimester, during the first trimester only, Totstoff vaccinations should be given. Before pregnancy, Totstoff vaccinations are not a reason to postpone a pregnancy.
Vaccination with live vaccines are contraindicated (such as measles, mumps and rubella) from three months prior to, and during the entire pregnancy. In the subsequent lactation vaccinations are generally available without restriction.
Allergenic immunological complications
If the pregnant woman has certain features in their blood cells and also ones handed down from father to child in the womb, the mother can recognize these characteristics as being a stranger. Then the mother develops antibodies against them.