What is herd immunity?
Answer and explanation
Correct answer: C. Protection for others when most people are immune
- Step 1: When most people are immune, the pathogen spreads less.
- Step 2: This protects those who cannot be vaccinated.
Answer
Protection for others when most people are immune.
Why not the others: Immunity gained by drinking an antibody solution: this would be passive immunity. Immunity acquired from the mother: this is passive immunity. Immunity that all animals have from birth: herd immunity depends on vaccination or past infection.
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