What is herd immunity?
Answer and explanation
Correct answer: C. Indirect protection of unvaccinated people when most of a population is immune
- Step 1: When enough people are immune, disease spread is limited and vulnerable people are protected.
Answer
Indirect protection of unvaccinated people when most of a population is immune.
Why not the others: Immunity from a single injection, Immunity from a previous infection only and Immunity found only in animals don't fit.
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More Infectious disease questions
- Which of the following is a pathogen?
- Which type of pathogen is the cause of influenza?
- Which of the following diseases is caused by a bacterium?
- Malaria is caused by which type of pathogen?
- Which of these is a non-specific (innate) first line of defence?
- Which of the following is part of the second line of defence?