You have not mentioned what is the age of your son and what vaccine
you wish to give him.
Since DPT is the most painful injection with very common adverse effects like excessive cry, pain and swelling in the site and fever
, I think you intend to know about the common DTP and the new DTaP that is claimed to have less adverse effects.
Yes, DTaP has acellular pertussis
component and hence less are the adverse effects mentioned above.
There may be controversial opinions on the choice between both.
I feel time tested DTP is better in many ways in terms of immunity.
Immediately after you give the vaccination
, start giving cold compresses. Along with this give paracetamol
in adequate dosage every 6 hours for atleast 2 days. Problems will be much less!