Question
A child has received three doses of the Hepatitis B vaccine but has not shown any symptoms. If the child still does not produce Hepatitis B surface antibodies, does it need a second dose of the Hepatitis B vaccine?
Answer
If a child fails to produce Hepatitis B surface antibodies after receiving the Hepatitis B vaccine, it is advisable to administer a second dose. Since children have weaker immune systems, vaccination is necessary to enhance their resistance against the Hepatitis B virus. Typically, the booster Hepatitis B vaccination schedule is 0, 1, and 6 months, and a check-up for Hepatitis B five items can be conducted at the 7th month to confirm whether the surface antibodies for Hepatitis B have been produced.