How is vaccine helpful to prevent the occurance of diseases ?
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Vaccines protect children by helping prepare their bodies to fight often serious, and potentially, deadly diseases
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Vaccines contain weaken versions of viruses, more specifically their protein coats. Your immune system gets alerted by the virus present and rushes to abolish it. Once your immune system fights off the virus, it will remember how to fight the virus and you will not contract the virus again. Once our immune system is finished fighting, it produces anti-bodies, which attach themselves to the virus does the virus enter your body again.
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