How does a vaccine work?
Please answer this question according to class 8th and as soon as possible
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Explanation:
Vaccines are like a training course for the immune system. They prepare the body to fight disease without exposing it to disease symptoms. When foreign invaders such as bacteria or viruses enter the body, immune cells called lymphocytes respond by producing antibodies, which are protein molecules.
vaccine is a dead oraganism or weak organism which is released to make our body strong and to remember the disease so if next time if real organism enters then our immune system is ready to fight
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vaccine insert in human body vaccine contain of that weak microorganisms
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