UK salmonella outbreak nears 500 cases
UK health authorities report nearly 500 salmonella cases linked to imported eggs, with two deaths. Investigations point to food eaten outside the home as the likely source.
Close to 500 people in the UK have fallen ill with salmonella linked to imported eggs. The UK Health Security Agency (UKHSA) has identified two new infection clusters, bringing the total number of cases to 474, with two deaths recorded.
While some cases date back a year, all involve bacteria that are nearly genetically identical, indicating a common source. Based on current evidence, experts believe people became sick after eating out, not from cooking eggs at home. More than a third of those affected, including infants and people as old as 92, have required hospital care.
Genetic clusters identified
The outbreak involves three specific, near-identical genetic clusters. The UKHSA provides the following breakdown of confirmed cases and deaths.
| Genetic Cluster | Confirmed Cases | Deaths |
|---|---|---|
| t5.9411 | 259 | 1 |
| t5.9765 | 38 | 1 |
| t0.24068 | 177 | 0 |
Most cases have been recorded in recent weeks and months, though investigations trace some back to August 2025. The majority are in England, with many in London and Yorkshire and Humber. A small number of cases have also been reported in Scotland, Wales, and Northern Ireland.
European cases and investigations
Cases are also appearing in other European countries. Austria has reported 2 cases, Belgium 15, Denmark 1, France 4, Germany 6, and the Netherlands 106. Investigations in the Netherlands, however, suggest a link to chicken meat rather than eggs.
Salmonella can be found in various food sources, including raw or undercooked poultry, meat, and eggs. Most people recover without treatment.
Safety advice for consumers
Thoroughly preparing and cooking food can prevent infection. Washing hands after using the bathroom and before handling food is also crucial. Experts advise it is safe to buy and eat eggs bearing the British Lion mark or produced under the Laid in Britain egg assurance scheme.
Suppliers for British Lion eggs must adhere to a strict code that includes testing and vaccinating hens against salmonella. Professor Ian Young from the Food Standards Agency stated, "The exact causes of these outbreaks have not yet been identified, but investigations so far have identified links to imported eggs."
The UKHSA says it will continue to follow up cases and investigate any further common sources. Symptoms of salmonella include stomach cramps, diarrhoea, vomiting, or fever, usually developing between 12 and 72 hours after infection. The agency advises anyone concerned to contact their GP first, noting that older people, babies, and those with weakened immune systems are at greatest risk.
