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Although vaccines cannot be used to treat a person who is sick, they can help to prevent infections. Vaccinations tell the body to create memory cells, which will function later to create antibodies against certain pathogens. When a person is vaccinated, what are they injected with?.

User Carnell
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16 votes

Answer:

weakened viruses or antigens from the virus

Step-by-step explanation:

User Hilalkah
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