Does the baby feel pain after the vaccination site becomes purulent?

Patient's question:

No

Doctor's answer:

Hello, according to your situation, redness and swelling usually appear 2 to 3 weeks after BCG vaccination, and scabbing occurs 8 to 12 weeks later. A few babies may experience adverse reactions such as ulcers or purulent discharge, but this does not indicate failure. Local anti-inflammatory treatment can be administered, but it is crucial to avoid incision and drainage or squeezing a large amount of pus.