Hepatitis A Vaccination Strategies Epidemiologic considerations Many cases occur in community-wide outbreaks no risk factor identified for most cases highest attack rates in 5-14 year olds children serve as reservoir of infection Persons at increased risk of infection travelers homosexual men injecting drug users◼ Many cases occur in community-wide outbreaks ◼ no risk factor identified for most cases ◼ highest attack rates in 5-14 year olds ◼ children serve as reservoir of infection ◼ Persons at increased risk of infection ◼ travelers ◼ homosexual men ◼ injecting drug users Hepatitis A Vaccination Strategies Epidemiologic Considerations