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Majority of children in many part of the country are already immune to hepatitis A by the time they are five years old. why?

Child immunization programmes do not  include hepatitis.
Vaccination against hepatitis A should be part of a comprehensive plan for the prevention and control of viral hepatitis. Planning for large-scale immunization programmes should involve careful economic evaluations and consider alternative or additional prevention methods, such as improved sanitation, and health education for improved hygiene practices.
 Whether or not to include the vaccine in routine childhood immunizations depends on the local context, including the proportion of susceptible people in the population and the level of exposure to the virus. Several countries, including Argentina, China, Israel, Turkey, the United States of America have introduced the vaccine in routine childhood immunizations.

While the two-dose regimen of inactivated hepatitis A vaccine is used in many countries, other countries may consider inclusion of a single-dose inactivated hepatitis A vaccine in their immunization schedules. Some countries also recommend the vaccine for people at increased risk of hepatitis A.


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