Mr. Trump spoke after Anthony Fauci — the nation’s top scientist, who is increasingly a target of far-right conspiracy theorists — warned that U.S. deaths from the outbreak could reach 200,000.

New York State, which has more than one-third of the country’s 141,000 known coronavirus infections, reported 237 new deaths, its highest one-day toll so far. And a commercial aircraft loaded with medical supplies from Shanghai landed in New York City, the first of 22 scheduled flights that White House officials say will funnel much-needed goods to the country by early April.

Looking ahead: If the New York metro area maintains its steep growth curve in new cases, it could have a more severe outbreak than the ones experienced in Wuhan, China, or the Lombardy region of Italy, a Times analysis found.

Analysis: The federal government’s failure to roll out large-scale testing of people who might have been infected has set the U.S. back a month in its battle with the coronavirus.

All our coverage: A debate over how much the American public should know about who has the virus highlights a perennial tug of war between privacy and transparency in the country.