Hello Dr, My daughter has been given BCG vaccine immediately on 2nd day after birth, now she is 4 months, 1 week and 2 days old till now she has not got any scar or pus on her hand, when we visited the hospital the doctor has suggested having re-vaccination, without any test in this week. Now my question is can I give her re-vaccination without any tests, if so is there any side effects? How safe is to give BCG her re-vaccination before 6 months?