Patient's question:
My child was born at You'an Hospital and received the hepatitis B vaccine after birth. Due to low antibody levels, they received an additional dose. Now they are four years old and need to know when to get the hepatitis B vaccine again. [Mother is a healthy carrier of the hepatitis B virus]Doctor's answer:
Hello, based on the situation you described regarding your child, after completing the full course of the hepatitis B vaccine, if the antibody levels were weak and a booster dose was administered, the duration of antibody persistence in such cases can generally last for three to five years, and for some individuals, it may even last up to ten years.Medical Advice: At this point, whether your child still has antibodies can only be determined through a hepatitis B two-item test at the hospital. If the antibody test is positive at this time, there is no need to receive the hepatitis B vaccine. If the antibody level becomes weakly positive, only one booster dose is required.
Doctor's Inquiry: