how long does the hep a vaccine last for children
How long does hepatitis A vaccine protect you? Estimates for long-term protection for fully vaccinat-ed people (i.e., full two-dose series) suggest that pro-tection from hepatitis A virus infection could last for at least 25 years in adults and at least 14â20 years in children.or people older than age 40 years, IG is preferred, but hepatitis A vaccine can be used if IG is unavailable. IG should be given to children younger than 12 months of age, immunocompro-mised people, people who have diagnosed chronic liver disease, and people for whom vaccine is con-traindicated.