Tdap is an abbreviation for tetanus, diphtheria, and acellular pertussis vaccine. It is a combination vaccine that protects individuals against three bacterial diseases: tetanus, diphtheria, and whooping cough. Tetanus is a serious bacterial infection that affects the nervous system. It can cause muscle spasms, lockjaw, and even death. Diphtheria is a bacterial infection that can… Continue reading What is Tdap?