What is the Difference Between DTP, DTaP, and Tdap?
The original DTP vaccine contains whole-cell pertussis bacteria, which can cause more side effects. The DTaP vaccine, introduced later, contains acellular pertussis components, making it less reactogenic and suitable for young children. The Tdap vaccine is a booster version with reduced quantities of diphtheria and pertussis components, recommended for older children, adolescents, and adults.
