Acellular pertussis vaccine, commonly known as the whooping cough vaccine, is an immunization that protects individuals from Bordetella pertussis, the bacteria that causes whooping cough. There are various synonyms used for this vaccine, including pertussis vaccine, DTaP (Diphtheria, Tetanus, acellular Pertussis) vaccine, and Tdap (Tetanus, diphtheria, acellular pertussis) vaccine. These terms may be used interchangeably, but it is important to note that there are slight differences in the composition and administration of each vaccine. Nonetheless, these vaccines play a crucial role in protecting individuals, particularly young children and vulnerable populations, from the harmful effects of whooping cough.