Immunization during pregnancy poses theoretical risks to the developing foetus. Although no evidence indicates that
vaccines currently in use have detrimental effects on the foetus. Despite that pregnant women should receive a vaccine
only when the vaccine is unlikely to cause harm, the risk of disease exposure is high, and the infection should pose
a significant risk to a pregnant woman or foetus. Some vaccines are recommended for routine administration during
pregnancy (tetanus, diphtheria, pertussis, inactivated influenza). Pregnancy is contraindication to administration of all
live-virus vaccines (for example morbilli, mumps, rubella, and varicella), except when susceptibility and exposure are
highly probable and the disease to be prevented poses greater threat to the women or foetus than does the vaccine.