Why it's hard to find rapid tests in the US
And why they're easy to find in Europe (though they don't seem to be helping much at the moment).
Today’s show was produced by Miles Bryan with help from Will Reid, edited by Matt Collette, engineered by Efim Shapiro, fact-checked by Laura Bullard and hosted by Sean Rameswaram.
Transcript at vox.com/todayexplained
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