ROME — Italy has recorded its highest day-to-day-rise in the number of deaths of people infected with the new coronavirus.

Civil Protection Chief Angelo Borrelli said Friday the country recorded 627 more deaths in the 24 hours since Italy surpassed China on Thursday as the nation with the most COVID-19-related deaths. The total now stands at 4,032.

Authorities said most of the people who died had existing health problems such as heart disease and diabetes before they were infected with the virus.

Borrelli says Italy also saw a staggering increase of 5,986 cases from a day earlier, bringing the official total in Italy to 47,021.

The soaring numbers come despite a national lockdown that drastically limits when residents are allowed to leave their homes. Police have issued citations to thousands of people for being out and about without valid reasons, such as going to work or shopping for food.

Mayors and governors throughout the country have been demanding even stricter measures. Italy’s national government is widely expected to respond soon.

In Bergamo, the epicenter of the Italian outbreak, cemeteries were overwhelmed. Patients at the city’s main hospital lined up in a narrow ward, struggling for breath as doctors and nurses moved swiftly from one beeping machine to the next.

“When the virus arrived here, there was no containment and it spread through the valleys very quickly. Some said it was the normal flu. We doctors knew it was not,” said Dr. Luca Lorini, head of intensive care at the hospital, where nearly 500 beds were dedicated to people suffering severe virus symptoms. Eighty patients were in intensive care.

The World Health Organization also noted the epidemic’s dramatic speed, pointing out that it took more than three months to reach the first 100,000 confirmed cases but only 12 days to reach the next 100,000. As of Friday, Johns Hopkins University counted more than 260,000 infections worldwide.

Countries frantically prepared for a deluge of patients in the coming weeks.

In Britain, the government asked 65,000 retired nurses and doctors to return to work. A convention center and hotels in Madrid were being turned into field hospitals for nearly 10,000 patients. France’s military worked to build a makeshift medical center in the hard-hit town of Mulhouse.

The virus has struck at the very identities of many countries: closing down cafes, restaurants and boulevard life in France, ending la dolce vita in Italy, shutting down England’s pubs and the ceremonial changing of the guard at Buckingham Palace.

Governments are trying to balance locking down residents with the need to keep food, medicine and other essentials flowing.