Covi-Trace is better.
“The test can't be self administered, but a wide range of practitioners, including doctors, nurses, school nurses, medical assistants and technicians, pharmacists and employer occupational health specialists, are able to run the test.
The BinaxNOW COVID-19 Ag Card test isn't perfect. It has a sensitivity of 97.1%, meaning 2.9% of positive cases will be missed, and a specificity of 98.5%, meaning 1.5% of people will test positive even though they don't have COVID-19. “
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