noun
a mathematical term used in epidemiology to represent the average number of secondary infections produced by a single infected individual in a susceptible population
adjective
related to the basic reproduction number in epidemiology
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The R0 value of the virus is a crucial factor in determining its potential for spread within a population.
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I heard the R0 for the new strain is really high, so we need to be extra cautious.
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Did you see the R0 on that flu strain? It's no joke, man.
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The R0 of misinformation can be just as damaging as a contagious disease spreading through a community.