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As the COVID-19 pandemic enters its fourth year, a negative result on a little plastic at-home test feels a bit less comforting than it once did.
Still, you dutifully swab your nostrils before dinner parties, wait 15 minutes for the all-clear and then text the host “negative!” before leaving your KN95 mask at home.
It feels like the right thing to do, right?
The virus has mutated and then mutated again, with the tests offering at least some sense of control as the Greek letters pile up. But some experts caution against putting too much faith in a negative result.
So it’s only fitting to do a reality check on what those rapid COVID-19 tests, also called antigen tests, can do — and what they can’t.
Read more at NPR.org
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