Access to tests has improved significantly, and in some places, people can now get tested without having to show any symptoms. We asked experts how much you can really learn from the result.
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Laurel Wamsley is a reporter for NPR's News Desk. She reports breaking news for NPR's digital coverage, newscasts, and news magazines, as well as occasional features. She was also the lead reporter for NPR's coverage of the 2019 Women's World Cup in France.