Understanding false positive and false negative COVID-19 tests

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"False negative test results are even more dangerous, as people may think it is safe and appropriate for them to engage in social activities."

https://globalnews.ca/news/7323725/what-do-false-positive-covid-19-tests-mean/

 

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"Why testing negative for coronavirus isn't a guarantee you don't have COVID-19"

...[FONT=&quot]A new study found COVID-19 patients had at least a one in five chance of getting a negative test result during their infection, even if they were actually positive

[/FONT]...[FONT=&quot]experts say the high rate of false negatives could mean many cases aren't being caught.[/FONT]

https://www.cbc.ca/news/health/coronavirus-test-false-negative-1.5610114

 

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"[FONT=&quot]Canada could be 'massively underreporting cases' "[/FONT]

 

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"[FONT=&quot]The Public Health Agency of Canada (PHAC) said in a statement to CBC News that it is aware of the recent study on false negatives. A false-negative rate of 20 per cent is in line with the expected performance of the tests, the agency said."[/FONT]

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"[FONT=&quot]Another key concern is the potential for the coronavirus to mutate, which could affect the accuracy of the tests even further in the future.[/FONT]

 

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False negatives more common.