The inactivated hepatitis A vaccine requires a 6-month interval.
Disease description:
My child received the inactivated hepatitis A vaccine last month. I’m unsure how long we need to wait before administering the second dose—does the inactivated hepatitis A vaccine require a 6-month interval?
Doctor's answer (1)
Dr. Jin Zhongkui
Hepatitis A inactivated vaccine is typically administered with a 6-month interval between doses. Children and adolescents aged 1–16 years require two doses, spaced approximately 6 months apart, whereas individuals aged 16 years and older need only a single dose. Following vaccination, the body produces neutralizing antibodies and develops immunity. This vaccine is primarily used to prevent hepatitis A. Adverse reactions following vaccination may include fever and local symptoms such as pain, redness, and swelling at the injection site; these are generally mild and resolve spontaneously.
