A British scientist has said that flawed PCR tests mistook common colds and flu for COVID-19 and should have been axed. ''Many people may not have been infectious, despite getting a positive test,'' professor Francois Balloux, director of University College London's Genetics Institute, told The Mail on Sunday.

British scientist says flawed PCR tests mistook common colds, flu for COVID-19

In the high-stakes world of coronavirus testing, one mistake has taken center stage: the dreaded false negative, wherein a test mistakenly deems an infected person to be virus-free.

Why false positives matter, too

According to a US government study, facial recognition systems can produce inaccurate results, especially for non-whites. The study by the National Institute of Standards and Technology (NIST) identified "false positives rates" for Asian and African American.

Racial bias found in facial recognition tools: US government study

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