Photo by Jeff Kuwabara


This measure is frequently used in epizootiological studies to measure how commonly a disease or condition occurs in a population.

Prevalence measures how much of some disease or condition there is in a population at a particular point in time. This value is calculated by dividing the number of individuals with a disease or condition by the number of individuals examined.

Prevalence provides information about how widespread or common a disease is in a population at a given time.