Question
The newborn was born without receiving the BCG vaccine and has only been vaccinated against Hepatitis B. The pediatrician did not issue a BCG vaccination at one month of age. The child is now 2 months and 22 days old. Do they need to be vaccinated for BCG, and when is the best time to do so?
Answer
BCG is a combined tuberculin test where tuberculin is injected under the skin, and the size of the hard lump is observed. If the hard lump is less than 5 millimeters, it is considered negative. If someone has received the BCG vaccine or has tuberculosis, a hard lump less than 5 millimeters is also considered negative; if the hard lump is between 5 and 20 millimeters, it is considered generally positive. Generally positive results usually indicate that there is a certain level of antibodies in the body and do not require treatment. The test result was 10 millimeters, with no lung lesions, so there is no need to worry.