Prime Minister Boris Johnson of Britain, who was hospitalized over the weekend, has been moved to intensive care.

More than 10,000 people in the United States have now died from the virus.

The governor of Wisconsin ordered Tuesday’s primary election postponed, but he was overruled by the state’s Supreme Court.

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Where we are now: Bracing for the worst

There is a terrible week ahead in America — one of “death” and “sadness,” the White House has warned — as the number of confirmed coronavirus cases in the U.S. surged above 350,000 on Monday, the national death toll exceeded 10,000, and public health officials cautioned that even those grim numbers understated the true scale of the epidemic.

The U.S. is now by far the hardest-hit nation in the world, with more confirmed cases than the next three — Spain, Italy and China — put together. And the New York City area is the hardest-hit part of America, with hundreds of deaths daily and harrowing scenes of panicked doctors and besieged hospitals.

Though the crisis is showing signs of starting to level off in the city (more about that below), it is still growing explosively in places like Los Angeles, Miami and New Orleans. A halting federal response has left states and counties fighting with one another for critical supplies and imposing quarantines on each other’s residents.

The global pandemic shows little sign of letting up. At least 188 countries and territories have now reported five or more cases; many are in the early stages of outbreaks they are not well equipped to handle. But here and there are signs of progress: Death rates seem to be slowing in Italy and Spain, while countries like Singapore and South Korea show clear success in limiting new cases.