Cluster (epidemiology)

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A cluster refers to a grouping of health-related events that are related temporally and in proximity.[1] Typically, when clusters are recognized, they are reported to public health departments in the local area. The 1854 cholera outbreak which occurred in London is a classical example of a cluster. If clusters are of sufficient size and importance, they may be re-evaluated as outbreaks.

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  1. ^ "Definition of Clusters", Case Studies in Environmental Medicine (CSEM), Agency for Toxic Substances and Disease Registry, U.S. Department of Health and Human Services