Old Vaccine, New Tricks: Revive Early Pertussis Shot, Study Says

Newer isn't always better — some researchers are proposing to bring back an older version of the whooping cough vaccine, because multiple studies show that today's version doesn't protect as well as the earlier kind. In a new study, researchers suggest vaccinating children with one dose of the older whooping cough vaccine — called the whole-cell pertussis vaccine — and then giving them four doses of the current whooping cough vaccine in early childhood. Using a mathematical mod