herd immunity threshold
The percentage of a population that must be immune (through vaccination or prior infection) to prevent sustained transmission of a pathogen.
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Related Terms
R₀ (basic reproduction number)
The average number of secondary infections produced by a sin...
basic reproduction number (R₀)
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effective reproduction number (R or Rt)
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effective reproduction number (R(t))
The reproduction number at a given time, accounting for immu...