WSJ's Joanna Stern on whether wearable tech can detect Covid-19 symptoms

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WSJ's Joanna Stern on whether wearable tech can detect Covid-19 symptoms

Joanna Stern, Wall Street personal tech columnist, joins CNBC's "Squawk Alley" to discuss her recent column on whether popular smartwatches and fitness trackers can detect symptoms of Covid-19.
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Fri, Jul 31 202011:56 AM EDT