Disease cluster

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A disease cluster is an unusually high incidence of a particular disease or disorder occurring in close proximity in terms of both time and geography.[1] Typically, when clusters are recognized, they are reported to public health departments in the local area. If clusters are of sufficient size and importance, they may be re-evaluated as outbreaks. The 1854 cholera outbreak which occurred in London is a classic example of such a cluster.

See also[edit]


  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