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USES OF SURVEILLANCE

Explore the critical uses of surveillance, such as estimating health problems and defining priorities, and understand limitations like underreporting and incomplete data.

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USES OF SURVEILLANCE

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  1. USES OF SURVEILLANCE • Estimate the magnitude of the problem • Determine geographic distribution of health problems • Potray the natural history of a disease • Detect epidemics/define a problem • Generate hypothesis, stimulate research • Evaluate control measures • Monitor changes in infectious agents • Detect changes in health practices • Define public health priorities BPH/OEHP/DSDC/IDEP

  2. INFLUENZAANTIGENIC CHANGE USA 1999-2002 http://www.cdc.gov/ncidod/diseases/flu/weeklychoice.htm

  3. USES OF SURVEILLANCE • Estimate the magnitude of the problem • Determine geographic distribution of health problems • Potray the natural history of a disease • Detect epidemics/define a problem • Generate hypothesis, stimulate research • Evaluate control measures • Monitor changes in infectious agents • Detect changes in health practices • Define public health priorities BPH/OEHP/DSDC/IDEP

  4. USES OF SURVEILLANCE • Estimate the magnitude of the problem • Determine geographic distribution of health problems • Potray the natural history of a disease • Detect epidemics/define a problem • Generate hypothesis, stimulate research • Evaluate control measures • Monitor changes in infectious agents • Detect changes in health practices • Define public health priorities BPH/OEHP/DSDC/IDEP

  5. SMALLPOXPre-event VaccinationPost-event Vaccination INFLUENZAVaccinationAntiviralPrevention ( Hygiene) BPH/OEHP/DSDC/IDEP

  6. LIMITATIONS OF SURVEILLANCE SYSTEMS BPH/OEHP/DSDC/IDEP

  7. Limitations Cont….. • Underreporting • Incomplete data • Lack of representativeness of reported cases • Changing case definition • Misconceptions due to lack of knowledge • Lack of timeliness • Inconsistency of case definition • Confidentiality • Lack of manpower BPH/OEHP/DSDC/IDEP

  8. Limitations Cont….. Underreporting • 5-80% cases reported • Food Borne Illness • Lack of knowledge of the reporting requirement • Negative attitude toward reporting • Waste of time • Too much paper work BPH/OEHP/DSDC/IDEP

  9. Limitations Cont….. Incomplete Data • Forms • Missing information • Immunization record • Serotyping • Invasive Bacterial Diseases • No Follow up • Arbovirus testing • Pertussis BPH/OEHP/DSDC/IDEP

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