Virus Proves Baffling, Turning Up in Only 40% of a Lab’s Test Cases

Canada's main virology laboratory has found the SARS virus identified by WHO in only some of its probable and suspect cases.

Virus Proves Baffling, Turning Up in Only 40% of a Lab's Test Cases

Lawrence K. Altman
Thursday, April 24, 2003

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http://www.nytimes.com/2003/04/24/science/24INFE.html
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