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. 2004 Jun 2;49(1):1–7. doi: 10.1016/j.jinf.2004.04.001

Table 3.

Case definition for a discarded case

A case is discarded when
 • an alternative laboratory diagnosisa is made which can fully explain the illness
OR
 • the patient has a negative convalescent serology result (Note: a negative PCR result does not result in the declassification of a probable case)
a

Identification of another pathogen does not necessarily exclude the diagnosis of SARS.