A worker disinfects a public bus against coronavirus in Tehran, Iran early today. Iran’s government said Tuesday that more than a dozen people had died nationwide from the new coronavirus, rejecting claims of a much higher death toll of 50 by a lawmaker from the city of Qom that has been at the epicenter of the virus in the country. (AP photo)

SEOUL, South Korea — Scientists raced to find a treatment, crews scrubbed everything from money to buses and quarantines were enforced Wednesday from a beachfront resort in the Atlantic to an uninhabited island in the Pacific as the world fought the spread of a new virus.

Worries over the ever-expanding economic fallout of the COVID-19 crisis multiplied, with factories idled, trade routes frozen and tourism crippled, while a growing list of countries braced for the illness to claim new territory. Even the Olympics, five months away, wasn’t far enough off to keep people from wondering if it would go on as planned.

“We don’t expect a miracle in the short term,” said Kianoush Jahanpour of the health ministry in Iran, where an official tally of infections of 139 was doubted by some who thought the problem was far bigger.

About 81,000 people around the globe were sickened by the coronavirus that kept finding new targets.

In Europe, where Germany, France and Spain were among the places with a growing caseload, an expanding cluster of more than 200 cases in northern Italy was eyed as a source for transmissions. In the Middle East, where cases increased in Bahrain, Kuwait and Iraq, blame was directed toward Iran. In Asia, where the crisis originated late last year in China, threats continued to emerge around the region, with South Korea battling a mass outbreak centered in the 2.5 million-person city of Daegu.

Though the virus pushed into countries both rich and poor, its arrival in places with little ability to detect, respond and contain it brought concern it could run rampant there and spread easily elsewhere.

“We’re going to be trying to slow down the spread so that our hospitals are not overwhelmed in one big gulp, one big hit,” said Ian Mackay, who studies viruses at the University of Queensland in Australia.

In South Korea, workers sanitized public buses, while in China, banks disinfected banknotes using ultraviolet rays. In Germany, authorities stressed “sneezing etiquette,” while in the United States, doctors announced a clinical trial of a possible coronavirus treatment.

Around the world, as Christians marked the start of the holy season of Lent with Ash Wednesday, worshipers found churches closed and rituals changed by virus fears. Even in St. Peter’s Square, many of those gathered for Pope Francis’ weekly audience wore face masks and clergy appeared to refrain from embracing the pontiff or kissing his ring.

Services in Singapore were broadcast online to keep people from crowded sanctuaries where germs could spread, bishops in South Korea shuttered churches for what they said was the first time in the Catholic Church’s 236-year history there, and in Malaysia and the Philippines, ashes were sprinkled on the heads of those marking the start of Lent instead of using a damp thumb to trace a cross of ashes.

“We would like to be cautious so that the coronavirus will not spread,” said the Rev. Victorino Cueto, rector of the National Shrine of our Mother of Perpetual Help in Manila in the Philippines.

Major gatherings were eyed warily, with organizers scrambling to respond in the face of the epidemic. Looming largest of all are the Olympic games, whose opening ceremonies are scheduled for July 24 in Tokyo. A member of the International Olympic Committee, Richard Pound, sounded alarms a day earlier, saying the virus could force a cancellation of the games.