Sentinel Surveillance

**Definition:** Monitoring of rate of occurrence of specific conditions to assess the stability or change in health levels of a population. It is also the study of disease rates in a specific cohort such as in a geographic area or population subgroup to estimate trends in a larger population. (From Last, Dictionary of Epidemiology, 2d ed)

**Tree numbers:** - E05.318.308.980.438.700.650 - E05.318.650 - N05.715.360.300.800.438.625.650 - N06.230.100.035.250.500 - N06.850.520.308.980.438.700.650 - N06.850.520.699 - N06.850.780.200.625.500 - N06.850.780.675.650

**Synonyms:** - Biosurveillance Systems - Syndromic Surveillance