"In our country majority of children are already immune to Hepatitis A without giving its vaccine tthem."Justify this state ment giving 3 reasons???????

This is because in India majority of children get exposed to hepatitis A virus in their early childhood. During childhood, the effect of the disease are mild and the child body synthesise antibodies against the virus which provide them immunity. As a result, these children  don't need vaccination and become resistant to the disease permanently.

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