Patient's question:
Mother has hepatitis B. How long after the baby is born can you check if he/she has hepatitis B? After birth, he/she received the hepatitis B vaccine and hepatitis B immune globulin.Doctor's answer:
You can check it after 6 months. The significance of testing after injection is not very great. As long as you ensure the blocking success rate is above 95%.If you want to check whether the hepatitis B vaccine has been successfully administered, it is recommended to wait 20 days after completing the full course of the hepatitis B vaccine before checking if it has taken effect.
Individual differences vary, so the chance of producing antibodies differs from person to person. After the first injection, only 18% of people develop antibodies within 2 weeks, and this increases to 41% after one month. After the second injection, 80-90% of recipients develop antibodies. Six months after the third injection, 96% of people show positive antibody levels, which remain stable for several years.