Is it Normal Not to Have an Infection After Receiving the BCG Vaccination?

Update Date: 2024-05-28 Source: Network

BCG Vaccination

BCG vaccination plays a preventive role against Mycobacterium tuberculosis infection. Given the high incidence of tuberculosis in China, it is necessary to vaccinate children with BCG promptly after birth. Babies can be vaccinated with BCG if they are 24 hours old, weigh more than 2500g, and have no other abnormalities. Is it normal to have no abscess after BCG vaccination?

I. Is it normal to have no abscess after BCG vaccination?

There are two possible reasons for no abscess after BCG vaccination. First, there may be no corresponding bacteria in the baby's body, so there is no reaction between the pathogen and the drug after vaccination, and no abscess will occur. Second, the injection of BCG vaccine may not be successful, which can also lead to the absence of abscess. In this case, it is recommended to take the child to the hospital for further examination.

II. What to note when babies receive BCG vaccination

1. Babies can be vaccinated with BCG if they are 24 hours old, weigh more than 2500g, and have no other abnormalities. The vaccination should be completed before the age of 1 year at the latest.

2. Normally, 0.1ml of the vaccine is injected intradermally on the outer side of the deltoid muscle of the left upper arm. If it is injected simultaneously with hepatitis B vaccine, it should not be injected on the same side.

3. About one to two weeks after vaccination, a red nodule will appear locally, which will gradually grow larger and may cause mild pain or itchiness, but no fever will occur. Six to eight weeks later, a pustule or ulceration will form. Ten to twelve weeks later, scabbing will begin, and after the scab falls off, a slightly red small scar will be left. Over time, the redness will gradually turn to normal skin color.

4. When there is a pustule or ulceration locally after vaccination, no medication or bandaging is necessary. However, the area should be kept clean, and clothes should not be too tight. If there is any discharge, it can be wiped clean with sterile gauze or cotton without squeezing. On average, it will heal and form a scab naturally in two to three months. The scab should be allowed to fall off naturally, and should not be forcibly removed.