Question
After my baby received three doses of the hepatitis B vaccine, the test results showed that the antibody effect was not significant. I want to know if a booster shot is needed, as well as the differences in efficacy between domestic and imported vaccines?
Answer
The complete hepatitis B vaccine series consists of three doses, administered according to a schedule of 0, 1, and 6 months. Sometimes, even after vaccination, antibodies may not be produced, and a higher dose may be required. Due to genetic factors, some individuals may not produce antibodies even after multiple doses. Some individuals produce antibodies later than others and are referred to as having a delayed response. As for the choice between domestic and imported vaccines, there is currently no clear evidence to indicate which one is more effective. It is recommended to consult a doctor or a professional institution for more personalized advice.