A new study reveals that more than 40 percent of positive results in rapid antigen tests are false, findings that come at a time when provinces are increasingly relying on the rapid tests to form COVID-19 response strategies. The study, conducted by the University of Toronto’s Rotman School of Management, was published in the JAMA peer-reviewed journal on Jan. 7, 2022. The researchers studied the results of roughly 900,000 rapid antigen tests taken in over 530 workplaces across Canada between Jan. 11 and Oct. 13, 2021. During this period, the country experienced two major COVID-19 waves driven by the Delta variant, recording 1,322 positive rapid tests results, or 0.15 percent of the total tests. Among these positive cases, 1,103 patients were asked to take a polymerase chain reaction (PCR) test for further confirmation. The study found that a total of 462 rapid test results were false, which represents 42 percent of …
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