False Negatives Raise More Questions About Virus Test Accuracy
An Abbott Laboratories ID Now Covid-19 test kit box sits on a table before a Coronavirus Task Force news conference in the Rose Garden of the White House in Washington, D.C., U.S. (Photographer: Michael Reynolds/EPA/Bloomberg)

False Negatives Raise More Questions About Virus Test Accuracy

(Bloomberg) -- New research is raising more questions about tests used around the U.S. to diagnose Covid-19 patients, with some of the tests producing a surprisingly high rate of false negatives th...
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