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Your friend is terrified of going to the doctor, mostly because there is often a shot at the end of the visit. Explain to your friend what a vaccine does and why it is so important for the body to be protected against viral pathogens.

User Cygorger
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1 Answer

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Vaccines is just the weakened pathogen, with the shot, your immune system in a way "upgrades" and in the future it will know how to kill off that pathogen
User Richard Grossman
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