A boy of ten years had chicken-pox. He is not expected to have the same disease for the rest of his life. Mention how it is possible.

A boy of ten years had chicken-pox. He is not expected to have the sam

1.	A boy of ten years had chicken-pox. He is not expected to have the same disease for the rest of his life. Mention how it is possible.
Answer» When the boy encounters a pathogen for the first time, his body produces antibodies which develop memory of the first encounter to protect the body in future.

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A boy of ten years had chicken-pox. He is not expected to have the same disease for the rest of his life. Mention how it is possible.

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