Rose DeVore with and 4 others at Violet Township, Fairfield County, Ohio. 1  Jimmy Lee Frazier II at Violet Township, Fairfield County, Ohio. 1  Carey Frazier was watching Game of Thrones at  2  Jimmy Lee Frazier II at  3  Bunny Rickenbacker at
1 Understand that hepatitis B vaccination-induced protective antibodies can last for up to 15 years, but appear to fall off over time.2  Patients who were vaccinated 10 to 15 years ago, especially those who were vaccinated as children, may not be adequately protected. Patients who were vaccinated 10 to 15 years ago, especially those who were vaccinated as children, may not be adequately protected. 2  For patients with this history who are at moderate to high risk of hepatitis B infection consider quantitative hepatitis B antibody measurement to determine protective immunity.
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 14â20 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.