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A-Level Biology OCR A

Unvaccinated Population Explain Vaccination Significant Number People Provide

Front Explain how vaccination of a significant number of people in a population can provide protection for unvaccinated people.
Back Protecting unvaccinated people:
  • If there are enough vaccinated people, herd immunity is reached meaning less transmission and therefore less likely for disease to reach an unvaccinated person - it cannot spread through a population that is already immune

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