The pus left by BCG vaccine broken can be treated locally first, keep the area dry, you can use alcohol or iodine vapour for local disinfection to prevent secondary infection. If it does not heal for a long time, or if there is high fever or recurrent fever, you should go to a regular hospital for early treatment.
The normal reaction after BCG vaccination is about 2 to 3 weeks after vaccination, local redness, swelling and hard nodules appear, and small white pustules gradually form in the middle of the hard nodules, and then penetrate the skin on their own to form shallow ulcers, and then the ulcers crust. After the scab falls off, it will leave a permanent mark.
BCG vaccine is one of the components of tuberculosis prevention and immunization program, can be used to prevent and reduce the occurrence of tuberculosis in children, especially tuberculous meningitis, blood-borne tuberculosis, parents need to pay attention to the BCG vaccination matters, on time to take their children for vaccination.