Patient's question:
A 7-year-old boy goes to the school canteen for dinner. His hepatitis B test results are negative. Do I need to get vaccinated? Thank you!Doctor's answer:
In the five-item hepatitis B test, one item is HBsAb, which stands for hepatitis B surface antibody. For individuals who have received the hepatitis B vaccine, if only this item is positive, it should be considered a normal phenomenon after vaccination. The negativity of the other four items indicates no viral infection. If HBsAb remains negative after vaccination, it proves that the vaccine did not stimulate the body to produce additional antibodies, and the vaccination did not achieve the expected effect. For safety, it is recommended to receive one more dose of the hepatitis B vaccine to ensure the body produces protective antibodies.