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Active SurveillanceEpidemiology Surveillance in which extra measures are taken to collect data and confirm diagnoses to ensure more complete reports for surveys and outbreak investigations. Active surveillance encompasses formal and informal communications.
Oncology Active waiting An approach to managing early prostate cancer (PC), which affords a window on its natural history, and is an ideal setting for identifying and evaluating biomarkers of PC behaviour. It is essentially watchful waiting with a protocol of serial digital rectal exams, measurement of PSA levels and re-biopsy at intervals.
Monitoring the health of a community by a public health agency that requests reports about specific diseases or conditions.
See also: surveillance
keeping a watch over.
sampling, including necropsy examination, of clinically normal samples of the population; important in the surveillance of diseases in which subclinical cases and carriers predominate.
watching over a population and recording data likely to have epidemiological significance, usually with the aim of early detection of disease. Essentially an interventionist exercise compared with monitoring, which is passive.
examination of only clinically affected cases of specified diseases in the population.