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Surveillance - Coggle Diagram
Surveillance
Types of Surveillance
Feature
Method
Cost
Inexpensive.
Expensive.
Complete, accurate, timely.
Outbreaks, eradication programs, new diseases.
Quality
Incomplete, inaccurate, not timely.
Use
Routine monitoring, wide range of diseases.
Passive Surveillance
Active Surveillance
Healthcare providers report cases (routine).
Staff actively seek cases (field visits, case finding).
Definition (CDC): Ongoing, systematic collection, analysis, interpretation of health data, integrated with timely dissemination for public health action. Goal: Early detection of threats.
Surveillance Process:
Data Collection → Data Analysis → Data Interpretation → Dissemination → Action
Data Sources: Notifiable diseases, electronic health records, vital statistics (birth/death certificates), registries (cancer), surveys. In Egypt: NEDSS (National Egyptian Diseases Surveillance System).
Indicators of Effective Surveillance: Simple, Complete, Timely, Sensitive (captures true cases), Specific (excludes non-cases), Representative, Flexible, Hierarchical.