What does Vaccination, DTaP mean in medical term?

Vaccination, DTaP means: Vaccination and DTaP: DTaP is similar to DPT.
Pertussis whooping cough, diphtheria and tetanus are all possible. DTaP can be confused with DTP.
It contains only the cell pertussis vaccine, which causes fewer minor side effects.
Immunization is less likely to trigger allergic reactions than immunization.
Pertussis vaccine can sometimes cause severe reactions. DTaP currently is not available.
Only recommended for shots that are given between 18 and 6 years.
(in Medical Dictionary)