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Now that every American household can sign up to get four at-home COVID-19 tests from the federal government for free, we\u2019re talking all about COVID testing. We\u2019re answering some top questions about when to use each type of test, their accuracy, and their availability.

Our expert today has been tracking the development of COVID-19 tests throughout this pandemic: Dr. Gigi Gronvall is an immunologist and senior scholar at Johns Hopkins University. She\u2019s clearing up misconceptions about at-home testing, sharing her take on the CDC\u2019s latest isolation guidelines, and more.

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