How do vaccines work?
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Explanation:
vacation helps us not to get affected from various deases.
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Vaccines are made from the same germs that cause the disease; for example, polio vaccine is made from polio virus. But the germs in vaccines are either killed or weakened so they won’t make you sick.
When Vaccines containing these weakened or killed germs are introduced into your body, the immune system reacts to the vaccine in a similar way that it would if it were being invaded by the disease and makes bantibodies.
These antibodies destroy the vaccine germs just as they would the disease germs — like a training exercise. Then they will stay in the body, providing immunity. If you are ever exposed to the real disease, the antibodies will protect you.
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