Real-world effectiveness of maternal genetically inactivated acellular pertussis vaccination in protecting infants under three months of age: a case-control study using concurrent community-based and test-negative controls.
PURPOSE Infants too young for primary vaccination face the highest risk of severe pertussis and death. While maternal vaccination is the primary protective strategy, the real-world vaccine effectiveness (VE) of acellular pertussis (aP) vaccines in Thailand (including recombinant aP (aPgen)) remains unknown. We aimed to...