How once infection of chicken pox provides life time immunity ?
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Answer:
our immune system works on the principle of memory.
Explanation:
infection of chicken pox provides life time immunity as once you have suffered from chicken pox then the body recognises the virus of chicken pox.so if that virus attacks your body again,in that case the WBCs have already prepared the sufficient amount of antibodies to fight against that particular virus.this helps in providing life time immunity.
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