LEXINGTON, Ky. (WKYT) - Back-to-school season is on the horizon; with a few weeks to go, many are ready to start the new year. However, looming cases of pertussis in Lexington are causing some ...

Divergence has been found between Bordetella pertussis vaccine strains and circulating strains. Polymorphism in pertactin (Prn) is essentially limited to region 1, which is made up of repeats. Today, ...