It has been observed that auoilablility of the vaccine for hepatitis a in the market it may not be necessary to be given to the children by the time they are five years old. Why?
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1
Explanation:
Because they might have generated the antibodies against it....and after five years of birth....body itself becomes strong enough to fight against the foreign bodies
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0
Answer:
Since these are directly exposed to Tap water.But are in Dormant or dead form
Explanation:
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