Question
A child has received the Hepatitis B vaccine, but the test shows that antibodies are not present in the body. Does this mean there is a risk of infection? What should be noted? Additionally, can the child receive a booster shot? The health department recommends re-vaccination with three doses and then observing.
Answer
Firstly, consider re-vaccination promptly. Children with weaker immunity may produce antibodies through timely re-vaccination. Therefore, it is important to regularly check antibody levels and strengthen immunity promptly when levels are low to achieve protective effects. At the same time, it is necessary to identify the cause of the immune non-response, such as informing the doctor if the mother is a carrier of the Hepatitis B virus, as these children have different immunization schedules than others. It is essential to vaccinate children with the Hepatitis B vaccine as soon as possible, and they should be vaccinated as soon as they meet the vaccination criteria. This not only provides early immune protection for the child but also ensures that the antibody concentration produced by the Hepatitis B vaccine