A hepatitis A vaccination offers protection against the virus for at least 20 years. It consists of two injections, given several months apart. Children who are older than 1 year can get the vaccine (it is recommended between 12 and 23 months of age). Among the people who should get the hepatitis A vaccine are travelers to developing countries with high incidence rates; people who have potentially life-threatening allergies to components of the vaccination should not get it.
(Click Hepatitis A Vaccine to read the complete eMedTV article, which provides a detailed look at the vaccine and provides more information on who should and should not get it.)