How long it takes for young children to produce antibodies after hepatitis B vaccination varies from person to person, but most vaccinees produce higher titers of antibodies about 2 weeks after the second dose.
China is a large country with hepatitis B. Hepatitis B vaccine is one of the vaccinations that must be administered to infants after birth. Usually only a small number of vaccinees can produce antibodies after the first dose, and most vaccinees can produce sufficient titers of antibodies within 2 weeks after the second dose. The third dose is a booster shot, which enhances the immunization effect.
There are three doses of hepatitis B vaccine, one within 24 hours of birth, one at 1 month of age, and one at 6 months of age.
Due to the different body types of individuals, a few people do not produce antibodies after vaccination, so hepatitis B tests are also needed to determine whether the body has been successfully immunized.