UK salmonella cases nearing 500 as egg investigations continue

UK salmonella cases nearing 500 as egg investigations continue

UK authorities have reported that nearly 500 individuals have fallen ill with salmonella infections linked to imported eggs. The UK Health Security Agency initially announced 207 cases last week, but this figure has since increased to 259. With the identification of two additional infection clusters, the overall number of cases now stands at 474, along with two fatalities.

Although some infections date back as far as a year, genetic analysis shows that the salmonella strains involved are almost identical, pointing to a shared food origin. Current investigations suggest that most people became infected after consuming food outside the home rather than through home-cooked eggs. This outbreak is part of a wider trend seen in several European countries, including Austria, Belgium, Denmark, France, Germany, and the Netherlands, where similar salmonella cases have been reported.

In contrast to the UK, investigations in the Netherlands imply that chicken meat, rather than eggs, may be the source of infection. Salmonella is known to be present in various food items such as raw or undercooked poultry, meat, and eggs. In the UK alone, over a third of those affected, ranging from infants to elderly individuals up to 92 years old, required hospitalization. Despite this, the majority of infected people recover without medical intervention.

The current outbreak in the UK is associated with three closely related genetic clusters of salmonella, designated t5.9411, t0.24068, and t5.9765. The breakdown of confirmed cases includes 259 linked to t5.9411 (with one death), 38 cases connected to t5.9765 (also with one death), and 177 cases associated with t0.24068. While most cases have arisen in recent months, investigations have traced infections back to August 2025. The bulk of incidents have occurred in England, particularly in London and the Yorkshire and Humber regions, with a smaller number of cases reported in Scotland, Wales, and Northern Ireland

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