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Immunization

Hardbiology

Herd immunity helps protect individuals who:

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About This Question

Subject
biology
Chapter
biology and human welfare
Topic
immunization
Difficulty
Hard
Year
2025
Tags
ImmunityPublic Health

Solution

Correct Answer:

Are unvaccinated

  1. Herd Immunity: Occurs when a large portion of a community (the 'herd') becomes immune to a disease (usually through vaccination).
  2. The Mechanism: Because most people are immune, the pathogen has difficulty finding susceptible hosts to spread. The chain of transmission is broken.
  3. The Beneficiaries: This provides indirect protection to unvaccinated individuals or those with weakened immune systems who cannot safely receive certain vaccines.
  4. Context: It is a critical public health goal to protect vulnerable populations who lack direct immunity.

This hard difficulty biology question is from the chapter biology and human welfare, covering the topic of immunization. It appeared in the 2025 exam.

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