GET VACCINATED WHILE PREGNANT, pass protection on to your newborn? “The researchers found no serious side effects in any of the women or infants, and there were no cases of pertussis in either group. But women in the vaccination group had high concentrations of pertussis antibodies, and so did their newborn babies. That did not substantially affect the babies’ response to the recommended four doses of the infant version of the vaccine given from age 2 months to 13 months.”