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Even though most vaccines contain a pathogen a person who has received a vaccine usually does not get sick why not?
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Even though most vaccines contain a pathogen a person who has received a vaccine usually does not get sick why not?

User Chuck Bergeron
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2 Answers

4 votes

Because your body’s immune system know what that virus look like and knows how to fight it off if you got the vaccine
User Odedfos
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3 votes
It’s also depends on how healthy you are and if you have a very strong immune system it will fight the pathogen
User Iza
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