Abstract
Vaccination during pregnancy is effective in providing protection against vaccine-preventable diseases in young infants. Here, timely (second rather than third trimester) pertussis vaccination during pregnancy is recommended, conveying protection against Bordetella pertussis in term and preterm born infants. Additionally, breastfeeding during the first months of life can be advised to achieve additional mucosal protection. One must note that after infant vaccination, humoral and limited cellular interference by maternal antibodies was observed. However, clinical relevance of maternal interference has yet to be determined, as evidence of good serological and cellular immunogenicity against DTaP-IPV-HB-PRP~T vaccine after primary and booster vaccination was provided.