Testing for the new coronavirus in the U.S. may ramp up quickly after the Food and Drug Administration said it would speed approval of tests from hospital and public-health laboratories to augment the limited supply from the federal government.

At a White House briefing Monday evening, FDA Commissioner Stephen Hahn said he expects the U.S. to have capacity for close to one million tests by the end of this week, from both public-health labs and private suppliers.

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