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If once small pox happen on …

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If once small pox happen on a person , it is not likely it happen again this is because our immune system develop memory cells of that disease, but why we fall ill again and again

Posted by Khushi Acharya 6 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Pratyush Indian 6 years, 4 months ago

Because second time our immune system will identify that diseases causing microbe and can destroy it easily

0Thank You

Sandeep Singh 6 years, 4 months ago

Because the immune system of the person who had suffered from the small pox may be weak

0Thank You

Kétú Máññ 6 years, 4 months ago

Because some effects are left in our body after disease which is recovered slowly

1Thank You

ANSWER

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CBSE > Class 09 > Science