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SARS
In full severe acute respiratory syndrome highly contagious respiratory illness characterized by a persistent fever, headache, and bodily discomfort, followed by a dry cough that may progress to great difficulty in breathing.
Cause and Symptoms
SARS is believed to be caused by a coronavirus, a type of virus usually associated with pneumonia and the common cold. The virus is named for the appearance in electron microscope images of a halo-like corona, or crown, around its surface. The virus is transmitted from an infected person through bodily secretions, usually droplets expelled by sneezing or coughing. After the virus incubates for approximately one week, the illness appears with a fever that remains above 38 °C (100.4 °F).
Aches and discomfort frequently accompany the fever, and soon a dry cough appears. In a minority of patients, respiratory distress progresses to the point where mechanical ventilation is necessary.
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