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Study Implicates Human Coronavirus As Main Cause Of SARS
April 08, 2003Early online publication: Tuesday 8 April 2003
FOR IMMEDIATE RELEASE
Research from Hong Kong fast-tracked for publication on THE LANCET's website--www.thelancet.com--provides evidence that a new virus belonging to the family Coronaviridae is likely to be the main cause of Severe Acute Respiratory Syndrome (SARS).
The investigators comment that the new virus is not one of the two known human coronaviruses. Nor is it exactly like any of the known animal coronaviruses. Although more genetic analysis needs to be done to be certain, Peiris believes that it may be a new virus which may have originated from animals.
He comments: "This report provides evidence that a virus in the coronavirus family is the etiological agent of SARS. However it remains possible that other viruses act as opportunistic secondary invaders to enhance the disease progression, a hypothesis that needs to be investigated further."
Ann Falsey and Edward Walsh from the University of Rochester, New York, USA, state in an accompanying Commentary: "These findings significantly strengthen the tentative aetiological association reported by other investigators who have also isolated a novel coronavirus from patients with SARS. As other pathogens, such as human metapneumovirus and Chlamydia spp, are identified in SARS patients, it will be important to use control groups to determine their role in causality or as cofactors for severe disease."
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