Dozens of guests who dined at the upscale Stockholm restaurant Coco & Carmen have fallen ill with listeria infections, with health authorities confirming at least four cases of sepsis among the affected patrons. The outbreak has resulted in approximately 80-81 formal complaints filed with Stockholm's environmental administration regarding food poisoning, with symptoms including high fever, abdominal pain, diarrhea, vomiting, and headaches appearing approximately 24 hours after dining at the establishment.

Health officials have expanded their investigation beyond the initial timeframe of September 25-27 to include guests who visited the restaurant on September 23-24, contacting approximately 400 people as part of the expanded tracing efforts. Currently, about 15 patients remain hospitalized, though none have required intensive care according to Maria Rotzén Östlund, an infectious disease physician with Region Stockholm. The condition of hospitalized patients varies, with some already recovering from their symptoms.

The restaurant's co-owner and chef Joakim Almquist expressed shock at the situation, stating in an email that the establishment is "distressed by what has occurred and hopes those affected recover quickly." Guests from multiple regions including Gothenburg, Örebro, and Uppsala have been identified among those infected, with many reporting severe illness lasting several days. One complainant described the experience as "torture," noting that they and their spouse had never felt so ill for such an extended period.

Coco & Carmen has temporarily closed during the investigation but is expected to reopen next week. Health authorities note that while listeria outbreaks in restaurants are uncommon, previous cases have been documented in medical literature. The exact source of the contamination remains unknown, though some guests have speculated about potential issues with shrimp served as part of the 14-course tasting menu that appears common to all complaints.

Finnair is gradually restoring its Airbus A321 fleet to service after an uncertified cleaning procedure forced the grounding of eight aircraft. The airline confirmed that seat covers were washed with water, a method not properly certified to ensure fire protection standards were maintained. This safety concern prompted the removal of the affected aircraft from service, leading to operational disruptions across Finnair's European network.

The situation began improving over the weekend as Finnair started installing new seat covers on the grounded aircraft. The first A321 returned to service on Sunday, operating a flight from Helsinki to Rhodes. However, seven aircraft remain out of service with no confirmed timeline for their full return. The A321s typically seat approximately 200 passengers and are crucial for Finnair's European route operations.

The grounding has resulted in significant passenger disruptions, with Finnair implementing extensive rebooking procedures. On Sunday alone, approximately 460 passengers were moved to different flights due to aircraft downgrades. The airline has prioritized high-frequency routes such as Helsinki-Stockholm and Helsinki-London, ensuring alternative options are available. In some cases, Finnair has used smaller replacement aircraft and offered incentives for volunteers to switch flights.

To manage the capacity shortfall, Finnair has wet-leased two aircraft with crews from Danish carrier DAT since Wednesday. While flight cancellations have decreased to single digits in recent days, with some days passing without any cancellations, the airline acknowledges that irregularities may continue through the coming week. Finnair is providing accommodation and compensation to affected passengers in accordance with EU air passenger rights regulations as it works to fully resolve the operational challenges.