If there is no adverse reaction after BCG vaccination, no special treatment is needed; if you feel any discomfort after wiping with iodized povidone, you need to consult a doctor in time. Under normal circumstances, after BCG vaccination, local redness, swelling, pain, fluid flow, etc., can be used to wipe iodine, such as disinfection without adverse reactions generally do not need special treatment, temporary observation can be. Generally speaking, it is normal to have localized suppurative reaction after BCG vaccination, no need to disinfect frequently, and the localized scabs will return to normal after drying. However, if you apply povidone-iodine to the local area after BCG vaccination and experience tingling, burning and other discomfort, you should consult a doctor immediately and take professional treatment under the guidance of a medical professional.