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Severe acute respiratory syndrome (SARS).

DEFINITION Severe acute respiratory syndrome is an infectious disease in humans that was first recognised in south East Asia in late February 2003. given the disturbing features associated with the disease, which include poorly defined pathogenesis, absence of laboratory diagnostic testing, and failure of known antimicrobial treatments, its emergence prompted the world health organization to issue the first global health alert for over a decade. WHO Case Definition As defined by the World Health Organization (WHO), a suspected case is classified as being disease in a person with a documented fever (temperature >38 C), lower respiratory tract symptoms, and contact with a person believed to have had SARS or a history of travel to a geographic area where there has been documented transmission of the illness. A suspected case with 1) chest radiographic findings of pneumonia, 2) acute respiratory distress syndrome, or 3) an unexplained respiratory illness resulting in death with autopsy findings consistent with the pathology of ARDS without an identifiable cause is considered a probable case. Suspect case 1. A person presenting after 1 November 20021 with history of: