The new restrictions, implemented by Governor Cuomo in the most intense effort yet to contain the coronavirus outbreak, took effect on Sunday night. They allow essential businesses, including grocery stores, laundromats and pharmacies, to remain open. Restaurants may operate for takeout and delivery only.

[Get the latest news and updates on the coronavirus in the New York region.]

New York State yesterday saw an increase of more than 4,000 confirmed cases since Sunday night, and the total number of cases is approaching 21,000.

According to the White House’s coronavirus response coordinator, nearly one in 1,000 people in the New York metropolitan area have the coronavirus, an “attack rate” five times that of other areas. She said 28 percent of tests in the region were coming up positive, compared with less than 8 percent in the rest of the country.

[This is New York City’s big “enemy” in the coronavirus fight.]

New York State has tested more than 78,000 people, Mr. Cuomo said, accounting for a quarter of all tests nationwide. Of all the New Yorkers who have tested positive since the outbreak began, 13 percent are currently hospitalized, he said.