Babies grew at the same rate whether or not their mothers received the tetanus, diphtheria and pertussis vaccine during pregnancy or while breastfeeding, according to an analysis of 42,758 electronic health records published this week in the journal Vaccine.
The finding answers a question that comes up in obstetric appointments more often than the research literature has addressed it. Parents weighing a third-trimester shot want to know whether it affects the baby, and growth is the outcome families notice first at every well-child visit.
