Division Case Classification for the inter-epidemic period

Also applies during an outbreak in a non-affected country or area

1. A..

   Possible case

   Any person meeting the clinical criteria with an epidemiological link

2. B..

   Probable case

   Any person meeting the clinical criteria with an epidemiological link and meeting the laboratory criteria for a probable case

3. C..

   Nationally confirmed case

   Any person meeting the clinical and the laboratory criteria for case confirmation where the testing has been performed at a national reference laboratory

4. D..

   Confirmed case

   Any person meeting the clinical and the laboratory criteria for case confirmation where the testing has been performed at a WHO SARS verification and reference laboratory