Biology · Why Do We Fall Ill
How does vaccination provide immunity against a particular infectious disease?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1By letting the body naturally acquire the full-blown disease once in childhood.
- 2By exposing the person to a dead, weakened, or inactivated pathogen.✓
- 3By infecting the person with a live virus that causes the same disease in animals.
- 4By injecting a very large dose of an active pathogen into the person.
Correct answer
By exposing the person to a dead, weakened, or inactivated pathogen.
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