Posted: Wed Apr 19, 2006 7:07 am Post subject: Age of Vaccination
Immunization of children (2-18 years of age) consists of 2 or 3 doses of the vaccine. Adults need a booster dose 6-12 months following the initial dose of vaccine. The vaccine is thought to be effective for at least 15 - 20 years. Vaccines to prevent HAV infection prior to exposure provide protection against the virus as early as 2 - 4 weeks after vaccination.
