The UK Health Security Agency has reported 474 confirmed cases of salmonella associated with imported eggs, including two deaths. The case count rose from 207 reported cases last week to 259, with two additional clusters bringing the total to 474. Investigations indicate that cases involve bacteria that are nearly genetically identical, pointing toward a shared food source. While some cases date back a year, the majority have emerged in recent weeks and months.
Epidemiological investigations suggest that affected individuals contracted the infection through restaurant dining rather than consuming eggs prepared at home. Three specific genetic clusters have been identified: t5.9411 with 259 confirmed cases and one death, t5.9765 with 38 confirmed cases and one death, and t0.24068 with 177 confirmed cases. The outbreak has been concentrated primarily in England, particularly in London and Yorkshire and Humber regions, though smaller numbers of cases have appeared in Scotland, Wales, and Northern Ireland. More than one-third of those affected have required hospitalization, with cases ranging from infants to individuals 92 years old.
Salmonella outbreaks have also been documented across Europe, with cases reported in Austria, Belgium, Denmark, France, Germany, and the Netherlands. Dutch investigations have suggested a connection to chicken meat rather than eggs in that country’s outbreak. Officials have emphasized that British-produced eggs carrying the British Lion mark or produced under the Laid in Britain egg assurance scheme remain safe to consume, as suppliers must adhere to strict codes involving hens testing and vaccination against salmonella. The Food Standards Agency and UKHSA continue collaborative investigations to identify the precise sources of contamination.
Symptoms of salmonella infection typically include stomach cramps, diarrhea, vomiting, and fever, usually developing between 12 and 72 hours after exposure. Most individuals recover without medical intervention, though older individuals, infants, and those with compromised immune systems face elevated risk of severe illness. Authorities recommend thorough food preparation and cooking, proper hand hygiene after bathroom use and before food handling, and prompt consultation with healthcare providers for those experiencing symptoms.
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