Understanding Herd Immunity
Herd immunity is a form of indirect protection from infectious disease that occurs when a large percentage of a population has become immune.
Why is herd immunity important for people who CANNOT be vaccinated?
What is Understanding Herd Immunity?
"Herd immunity is a form of indirect protection from infectious disease that happens when a large percentage of a population has become immune to an infection."
Which group contains only types of pathogen?
Vaccines contain dead or inactive forms of a pathogen. Why does this prevent future infection?
How does a vaccine usually protect a person from future disease?
Which pair of symptoms is most associated with measles in GCSE Biology?
Community Protection
If most people are immune, the pathogen cannot find a new host easily.
This reduces the overall spread of the disease in the population.
Protects vulnerable individuals (like newborns or the elderly).
Herd immunity is only effective if a high percentage (often >90%) of the population is vaccinated.
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