my 4 year son got a scracth in his shoulder by dogs nails we started vacination immedeatley from ver same day, after 3 vacines we went to see the dog, as per the owner dog had eaten some poisoness insect and got mad and they left dog far away from their home. We then undergone the fourth vacine also, the schedule was 30th nov., 3rd dec, 7th dec, 14th dec, ...now by mistake we gave 5th vacine on 21st instead of scheduled date i.e.28th of dec. Pls advise what is harm in overdose of the vacine......