my girl had a 9 month vaccination and after 1 month got a lump on right hand where the injection has been given. yesterday pus coming from that side.

A. this is a pustular swelling. there is pus accumulated beneath the swelling. there is a possibility that you may require antibioticsx to decrease the infection which has caused formation of pus. so kindly visit the doctor. for pain you canx give paracetamol as well as ibugesic if needed. if the swelling burst and pus comes out you can apply t bact cream