COPENHAGEN, Denmark >> A Norwegian cruise ship line halted all trips and apologized today for procedural errors after a coronavirus outbreak on one ship infected at least 5 passengers and 36 crew. Health authorities fear the ship also could have spread the virus to dozens of towns and villages along Norway’s western coast.

The confirmed virus cases from the MS Roald Amundsen raise new questions about safety on all cruise ships during a pandemic even as the devastated cruise ship industry is pressing to resume sailings after chaotically shutting down in March. In response to the outbreak, Norway today closed its ports to cruise ships for two weeks.

The Hurtigruten cruise line was one of the first companies to resume sailing during the pandemic, starting cruises to Norway out of northern Germany in June with a single ship, then adding cruises in July to the Arctic archipelago of Svalbard.

The 41 people on the MS Roald Amundsen who tested positive have been admitted to the University Hospital of North Norway in Tromsoe, north of the Arctic Circle, where the ship currently is docked. The cruise line said it suspended the ship and two others — the MS Fridtjof Nansen and the MS Spitsbergen — from operating for an indefinite period.

“A preliminary evaluation shows that there has been a failure in several of our internal procedures,” Hurtigruten CEO Daniel Skjeldam said in a statement. He added the company that sails along Norway’s picturesque coast between Bergen in the south and Kirkenes in the north is “now in the process of a full review of all procedures.”

It has contacted passengers who had been on the MS Roald Amundsen for its July 17-24 and July 25-31 trips from Bergen to Svalbard, which is known for its polar bears. The ship had 209 guests on the first voyage and 178 on the second. All other crew members tested negative.

But since the cruise line often acts like a local ferry, traveling from port to port along Norway’s western coast, the virus may not have been contained onboard. Some passengers disembarked along the route and may have spread the virus to their local communities.

A total of 69 municipalities in Norway could have been affected, Norwegian news agency NTB reported. Officials in the northern city of Tromsoe are urging anyone who traveled on the ship or had any contact with it to get in touch with health authorities.

Police in Norway are opening an investigation to find out whether any laws had been broken.

It’s not yet clear how the MS Roald Amundsen outbreak began. NTB reported that 33 of the infected crew members came from the Philippines and the others were from Norway, France and Germany. The passengers were from all over the world.

Skjeldam said cruise ship officials did not know they should have notified passengers after the first infection was reported Friday, adding that they followed the advice of the ship’s doctors.

But Line Vold of the Norwegian Institute of Public Health said its advice was to inform passengers and crew as soon as possible so they could monitor their health and go into quarantine or isolation, if needed.

“We have made mistakes. On behalf of all of us in Hurtigruten, I am sorry for what has happened. We take full responsibility,” Skjeldam said.

The Norwegian government announced today it was tightening the rules for cruise ships by banning ships with more than 100 passengers from docking in Norwegian harbors and disembarking passengers and crew for two weeks. The ban does not apply to ferries.

Health Minister Bent Hoeie said the situation on the Hurtigruten ship prompted the decision.

In Italy, the Costa Crociere cruise ship line said three crew members from two ships in Civitavecchia, near Rome, have tested positive for the coronavirus. The cruise company said two assigned to the Costa Deliziosa were hospitalized and a third, assigned to the Costa Favolosa, was in isolation on the ship.

The Italian cruise company, which is part of Carnival Corp. said the crews of both ships were being screened ”in view of the possible relaunch of our cruises, as soon as the government gives the authorization.” The Cabinet was to meet on the matter Sunday.

Costa Crociere said that all crew members were tested for the virus before leaving their countries, then undergo a second test once they arrive in Italy, after which they are put under a two-week monitoring period.

In the South Pacific, some 340 passengers and crew were confined on a cruise ship in Tahiti today after one traveler tested positive for the virus. The commissariat for French Polynesia said all those aboard the Paul Gauguin cruise ship are being tested and will be kept in their cabins pending the results.

The South Pacific archipelago started reopening to tourists last month, with a requirement that all visitors get tested before arriving and re-tested four days later.

Cruise lines stopped sailing in mid-March after several high-profile coronavirus outbreaks at sea. More than 710 people fell ill aboard Carnival’s Diamond Princess cruise ship while it was quarantined off Japan and 13 people died.

The Cruise Lines International Association, which represents more than 50 companies and 95% of global cruise capacity, said the resumption of cruises has been extremely limited so far. The voyages taking place must have approval from and follow the requirements of national governments, it said.

The U.S. Centers for Disease Control is not allowing cruise ships in U.S. waters at least through September.

The industry association said it is still developing COVID-19-control procedures based on advice from governments and medical experts and once they are finalized, member companies will be required to adopt them.

A German cruise ship last week set sail from Hamburg, testing procedures for how cruise ships can operate safely during the pandemic. The ship sailed with less than 50% capacity and only went on a four-day trip at sea with no stops at other ports.