Bumps caused by vaccinations are mostly seen as adverse reactions Different vaccinations have different reactions. About two weeks after BCG vaccination localized redness and swelling infiltration will appear 8-12 weeks, there will be scabs. If pus formation of small ulcers, axillary lymph node swelling, can be treated locally to prevent the spread of infection, but not cut and drain the vaccination. With the trivalent combined polio vaccine, a very small number of infants have diarrhea, but most heal without treatment. Vaccination of pertussis, diphtheria, tetanus toxoid mixed vaccine will appear local redness, swelling, pain, occasional rash, angioedema and so on. If the vaccination of measles generally no reaction, a few may appear 6-10 days of mild measles, give symptomatic treatment. Hepatitis B vaccination after the adverse reaction is less, do not have to deal with.