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SARS

Limitations

All tests for SARS-CoV available so far have limitations. Extreme caution is therefore necessary when management decisions are to be based on virological test results. For more details, see the WHO Update 39, "Caution urged when using diagnostic tests": http://www.who.int/csr/sarsarchive/2003_04_25/en/. In particular, false negative test results (due to low sensitivity, unsuitable sample