DPT Vaccine - Combination Vaccines With Acellular Pertussis

Combination Vaccines With Acellular Pertussis

DTap and Tdap are both combined vaccines against diphtheria, tetanus, and pertussis. The difference is in the dosage, with the upper case letters meaning higher quantity. The names are easy to confuse, and the Institute for Safe Medication Practices reports hundreds of cases of accidental mix-ups.

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