prevalence

prev·a·lence  (prv-lns)

n.

1. The condition of being prevalent.

2. Medicine The total number of cases of a disease in a given population at a specific time.

Thesaurus

Noun	1.	prevalence - the quality of prevailing generally; being widespread; "he was surprised by the prevalence of optimism about the future" generality - the quality of being general or widespread or having general applicability currency - general acceptance or use; "the currency of ideas"
	2.	prevalence - (epidemiology) the ratio (for a given time period) of the number of occurrences of a disease or event to the number of units at risk in the population epidemiology - the branch of medical science dealing with the transmission and control of disease ratio - the relative magnitudes of two quantities (usually expressed as a quotient)
	3.	prevalence - a superiority in numbers or amount; "a preponderance of evidence against the defendant" preponderance number, figure - the property possessed by a sum or total or indefinite quantity of units or individuals; "he had a number of chores to do"; "the number of parameters is small"; "the figure was about a thousand"

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prevalence

noun commonness, frequency, regularity, currency, universality, ubiquity, common occurrence, pervasiveness, extensiveness, widespread presence, rampancy, rifeness