Outbreak of Salmonella Stanley in Sweden
Published: 2026-07-09
An outbreak of Salmonella Stanley infections that affected multiple regions across Sweden has been declared over by the Public Health Agency of Sweden (Folkhälsomyndigheten, FoHM). The outbreak, first identified in late May 2026, involved 18 confirmed cases reported between 23 May and 3 June across six regions of the country. Investigations by FoHM and regional infectious disease control units indicated that all cases were infected with the same strain of Salmonella Stanley, suggesting a common source.
Salmonella is a foodborne bacterium that commonly causes gastrointestinal illness, including diarrhoea, fever, abdominal pain, and vomiting. Although the source of this outbreak could not be conclusively identified, epidemiological investigations, including patient interviews, food questionnaires, and purchase receipt analyses, suggest that the infections were likely linked to a food product with a short shelf life that is no longer available on the market. No new outbreak-related cases have been identified in recent weeks, and FoHM has therefore concluded that the outbreak has ceased. The latest information about this outbreak is available from Folkhälsomyndigheten and on our Salmonella Stanley page within the outbreaks section.
The Swedish Pathogens Portal continues to monitor infectious disease outbreaks of public health importance. Relevant updates and supporting research resources will be provided through the portal when appropriate.