Question
Are there any adverse effects of administering other vaccines on the same arm as the one where BCG was injected? (I asked my doctor, I said my child had BCG injected in that arm, and it wasn’t even a month yet. The doctor said it’s fine, the BCG only becomes purulent after 4 to 6 weeks, and it’s not even that long…)
Answer
The doctor’s view is correct. According to regulations, there should be a regional scab for 4 weeks after the BCG inoculation before other vaccines can be administered at the same site. However, since there have been no regional reactions at the baby’s vaccination site yet, it is safe to administer vaccines like DTP or HIB. Please don’t worry too much. Guidance: Most children will experience regional reactions 3 to 4 weeks after receiving the BCG vaccine, which go through stages such as redness, swelling, infection, pustule formation, ulceration, and finally scabbing. Generally, scabs will fall off around 3 months and leave a scar. It is recommended to perform a PPD test for your baby after 3 months to confirm successful vaccination. Survival Care: If there is a pustule or suppuration at the vaccination site, keep it clean. Avoid tight clothing. If pus leaks out, use sterile gauze or cotton to wipe it clean. Do not squeeze or push on it. Scabs will usually form and fall off naturally within two to three months.