Among people who were tested:

11 percent of those under 25 were positive.

17 percent of those between 25 and 45 were positive.

21 percent of those between 45 and 65 were positive.

22 percent of those between 65 and 85 were positive.

24 percent of those over 85 were positive.

Tests for the coronavirus are provided if people show symptoms such as a dry cough, fever or shortness of breath. Women are slightly more likely to get tested than men, although men seem to be more susceptible to the coronavirus, said Dr. Deborah Birx, the coronavirus response coordinator for the White House. Among women who were tested, 16 percent were positive; 23 percent of men who were tested had coronavirus infections.

The data, while disturbing, does not come entirely as a surprise. Similar trends have been observed in China and Italy, where men were both infected and succumbed to the coronavirus at higher rates than women.

“To all of our men out there, no matter what age group, if you have symptoms, you should be tested,” Dr. Birx said.

But one American man did not seem all that excited about wide-scale testing: President Trump.

The president expressed reluctance to wait for comprehensive national testing before reopening the country for business and social life again. While he boasted that testing has increased drastically in recent days, he said it would be implausible to expect that the whole country could be screened for the virus as a condition of restoring normal life.

“Do you need it? No,” he said at his daily briefing. “Is it nice? Yes. We’re talking 325 million people. That’s not going to happen, as you can imagine.”

Even though more than 1,000 people are now dying every day in the United States, new infections have slowed in places where stringent measures have been in place for more than two weeks, offering some hope.

OPEC and Russia reach a deal to cut oil production amid lower demand.