Briefly explain how a vaccine works?
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Vaccines containing these weakened or killed germs are introduced into your body, usually by injection. Your immune system reacts to the vaccine in a similar way that it would if it were being invaded by the disease — by making antibodies.
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Here is ur answer!
Explanation:
A vaccine is nothing but injecting a dead or weakend virus into our body... our immune system gets fooled and starts fighting against the virus... our immune system easily fights and produces antibodies gets rid of the virus.... Thus we won't get the same disease again as our immune system already knows how to fight away the disease...
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