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DEMONSTRATING FREEDOM FROM DISEASE: INITIAL STEPS IN THE PROCESS . An efficient and effective surveillance system provides the basis for confidence about disease absence . . Surveillance System Components. Active (targeted) sampling componentPassive detection/reporting componentActive SystemAppl
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1. DEMONSTRATING FREEDOM FROM DISEASE: INITIAL STEPS IN THE PROCESS Wayne Martin
Department of Population MedicineUniversity of Guelph,Guelph, Ontario, Canada. N1G 2W1E-mail: swmartin@uoguelph.ca
2. DEMONSTRATING FREEDOM FROM DISEASE: INITIAL STEPS IN THE PROCESS An efficient and effective surveillance system provides the basis for confidence about disease absence