What are the reactions to BCG in newborns?

In many areas, newborns must be vaccinated after birth. Vaccines can prevent children from being infected with bacteria, enhance their beauty, and prevent them from suffering from various diseases. Therefore, vaccination is a major method that must be implemented. So what are the reactions of BCG in newborns? Many mothers have vaccinated their children. What adverse reactions will their children have?

There are no other reactions except occasional vomiting.

The skin scratch method may cause papules or nodules with redness, swelling, infiltration and infiltration at the scratch site within one to three weeks, followed by pustules, but rarely ulcers. Generally, the scab will form in four to eight weeks and leave a scar after it falls off.

One to two weeks after intradermal injection, local redness and swelling will appear. After four to five weeks, pustules will form, followed by scabs, which will fall off and leave a small scar.

Some children have more severe reactions and local suppuration, and should be sent to the hospital for treatment by a doctor.

How should children protect their local area after BCG vaccination?

When a child has a local reaction to BCG, special attention should be paid to local cleaning and underwear should be changed frequently. When the pustule ruptures, the local area can be covered with sterilized gauze or gentian violet to prevent infection. When bathing the child, special care should be taken not to get the local area wet. After BCG vaccination, some children may sometimes experience strong local reactions (ulcer surface exceeds 1 cm and has not healed within 6 months) or ipsilateral lymph node reactions. In this case, the child should be taken to the hospital immediately for appropriate treatment.

What are the signs of effective BCG vaccination?

The local reactions after BCG vaccination are different from those of other vaccines. Most children will experience local reactions 3 to 4 weeks (initial vaccination) or 1 to 2 weeks (revaccination) after BCG vaccination. The reactions go through a process of redness and swelling, infiltration, pustule formation, ulceration, and scab formation. The scabs usually fall off in about 3 months, and local scars form. This is the normal reaction process after BCG vaccination and is a sign of effective vaccination. If this reaction does not occur, it indicates that the vaccination has failed and booster vaccination should be considered.

In the above article, we learned about the BCG reaction in newborns. First of all, the physical constitution of newborns is very fragile. After vaccination, the body will suddenly become uncomfortable, which will cause adverse reactions to the vaccine, so friends should pay attention.