The information on this site is directed at health professionals in order to facilitate a consistent approach towards the prevention and control of severe respiratory infections. The national documents provided on this site are intended to help health professionals to detect, diagnose, report and manage cases of Severe Acute Respiratory Syndrome (SARS) or other cases of Severe Respiratory Illnesses (SRI) of unknown etiology. Health professionals are encouraged to check within their own province/territory for any jurisdiction-specific documents on this topic.