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  5. Why do we fall Ill?

9th Class Science Why do we fall Ill? Question Bank 9th CBSE Science Why do we fall Ill?

  • question_answer
                  How do children in many parts of India get immune to hepatitis-A by the time they are five year old?  

    Answer:

     They are made immune to hepatitis-A by hepatitis-A vaccine (vaccination) or contracting the infection.


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