<prompt> Definition of surveillance:-Analysis of routine measurementsIntermittent scrutiny of factorsSystemic collection and analysis of dataAll of the above  <response>: surveillance Monitoring Constant scrutiny of factors affecting a disease with attention, authority suspicion Systematic ongoing collection, compilation, analysis interpretation of data Inbuilt action component is seen Feedback is inbuilt Cyclical continuous process Broader concept Continuous overlooking of progress of health activity performance analysis of routine measurements aimed at detecting changes in environment or health status of population - e.g. monitoring of air pollution, water quality, and growth nutritional status No inbuilt action component No feedback One-time linear process Smaller concept 