UK Salmonella Outbreak Kills One, Sickens 207 as Imported Eggs Suspected

One person has died and 207 others have fallen ill in a UK-wide salmonella outbreak traced to imported eggs, the UK Health Security Agency announced on August 18. More than a third of those affected required hospital admission, with two developing life-threatening blood infections. The outbreak spans from August 2025 to August 2026, with 199 cases in England, six in Scotland, one in Wales, and one in Northern Ireland.

What the outbreak reveals about imported egg safety

The UKHSA investigation identified all 207 cases as linked to a single strain of Salmonella Enteritidis through whole-genome sequencing. The Food Standards Agency ruled out UK-produced eggs and poultry, confirming that imported eggs used primarily in restaurants and cafes are the suspected source. Hannah Charles, lead epidemiologist for gastrointestinal infections at UKHSA, stated the agency is working with the Food Standards Agency and other public health agencies to trace the contamination’s origin.

Geographic spread and vulnerable populations affected

London recorded the highest number of cases at 47, followed by Yorkshire and Humber with 38. Cases span ages from under one year to 90 years old. At least 34 people required hospital treatment, with two developing serious blood poisoning. The outbreak began in August 2025 but accelerated sharply in recent weeks, with 206 of the 207 cases reported in 2026.

Symptoms and prevention measures

Salmonella infection typically causes stomach cramps, diarrhoea, vomiting, or fever within 12 to 72 hours of exposure. Most people recover without treatment, though vulnerable groups including infants and older adults face greater risk. The UKHSA advises thorough cooking of eggs, proper hand hygiene after using the bathroom, and careful food handling. Anyone concerned about symptoms should contact their GP or out-of-hours service.

Connection to previous outbreak and ongoing investigation

Dr Safi Rehman, a research associate at King’s College London, noted this outbreak is closely related to a 2025 outbreak also linked to imported eggs, with genetically similar strains between the two years. The UKHSA initiated its investigation on May 26, 2026, after detecting the increase through whole-genome sequencing data. Experts warn the reported figure is likely an undercount, as many cases go unreported.

Final Thoughts

The outbreak underscores supply chain vulnerabilities in imported food products. With investigations ongoing and the strain genetically linked to a 2025 outbreak, UK food safety authorities face pressure to tighten import protocols and traceability standards for eggs used in commercial catering.

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