Why don't "live" vaccines make you sick?
A) They've been allowed to adapt to non-human conditions such that they no longer affect humans.
B) They aren't really alive.
C) They are taken as a nasal spray rather than being injected into the blood stream.
D) Your immune system recognizes them right away.
E) They aren't made up of complete pathogens so they can't infect.
Correct Answer:
Verified
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