A suspected listeria outbreak linked to Coco & Carmen, a high-end restaurant in Stockholm’s Östermalm district, has resulted in multiple hospitalizations and widespread concern. Health authorities report that at least 15 individuals have been treated or are under observation, with four diagnosed with sepsis—a severe immune system reaction that can be life-threatening. While most of the affected individuals are not seriously ill, none have required intensive care so far. The outbreak has prompted an extensive infection tracing effort, initially focusing on diners from September 25 to 27 but later expanded to include those who visited the restaurant on September 23 and 24. Maria Rotzén Östlund, an infectious disease physician, advised anyone experiencing symptoms such as fever, vomiting, or diarrhea to seek immediate medical attention. Regional health officials have warned that a significant number of people may have been exposed, particularly vulnerable groups like pregnant women, older adults, and those with weakened immune systems. According to state broadcaster SVT, 80 people have reported food poisoning through a city tracking tool, and 400 have been contacted for infection tracing. Coco & Carmen has voluntarily closed its doors pending an investigation, emphasizing its commitment to guest safety and cooperation with authorities. The restaurant, which has a history of passing food safety inspections, hopes to reopen on October 7. Chef and co-owner Joakim Almquist expressed deep remorse, stating, ‘The only thing I can do is sincerely apologize, because I suffer with these people.’ Listeria, a bacterium found in soil, water, and animals, can contaminate food, especially when stored in cold conditions for extended periods. While most infections cause mild, flu-like symptoms, severe cases can lead to meningitis or sepsis, with an incubation period ranging from several days to three weeks.