Age: They are used for different age groups. Dtap is a dose to be given to infants and young children. The tdap is used for a booster shot for the teenager and adults. Both are to protect against tetanus, diphtheria, and pertussis.
Answered 8/31/2013
5.9k views
Immune response: The DTaP (big D) signifies a full dose of diphtheria antigen along with the other components,which is given to the child's emerging immune system to stimulate the immune system. The TdaP (little d) represents a vaccine with less diphtheria antigen, because a kids dose would bring on more side effects but not more protection.
Answered 7/20/2014
3.9k views
DifferentFormulation: Dtap is the pediatric vaccine given to children from 2 months to 6 years of age Tdap is given from 11years on and adults Both are different formulation
Answered 5/11/2016
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