Are these fast, cheap coronavirus tests the game-changer everyone is waiting for?

Move over, slowpoke coronavirus tests that take a week or more to return a result -- there's a new generation of rapid tests coming to town -- some are already here -- and they're poised to transform the landscape. They are the antigen tests, but are they really all they're cracked up to be?

source https://www.cnn.com/2020/08/28/health/antigen-test-coronavirus/index.html