Large local reactions to vaccines, although sometimes scary looking, are not dangerous, do go away, and are not a reason your pediatrician should typically tell you to skip or delay your child’s vaccines.
The current acellular pertussis vaccines include DTaP and Tdap.
DTP vaccines protect our kids against diphtheria, tetanus, and pertussis and include DTaP, Tdap, and TD.
To help prevent injuries from fainting after vaccines, “experts recommend having patients sit in a chair or lay down when they receive a vaccination. In addition, patients should be observed for 15 minutes after vaccination.”