One month baby vaccination, if the BCG vaccination was given at birth, this place sometimes appears like septic-like changes, is normal. Because the newborn baby is born, 24 hours after the BCG vaccination, of course, is a full-term child, 4-6 weeks after the vaccination may appear local rupture, ulceration, this is a normal phenomenon. In this case, you should pay attention to keep the area dry and not get wet, but when you take a bath, you can get some water and take a dry towel to wipe it off after the bath. If the child has localized ulceration, but there are swollen lymph nodes in the armpit or neck, he must go to the pediatrician to rule out lymphatic tuberculosis and need local closure treatment.