Answer:
Vaccinations are methods of introducing antigens into your body to get your body's immune system to react to them by producing antibodies to kill them or inactivate them, which will give you immunity to the antigen. In other words, vaccinations can be shots (or other types of injections under the skin), liquids taken by mouth, or intranasal sprays that give you a small dose of something that can't make you sick itself, but is just like or similar enough to something that would make you sick if you got it in its normal form. They are given to you made with the right antigens to make you immune to the disease or infection from which you want protection.
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