Health authorities in the United Kingdom are investigating a salmonella outbreak that has resulted in one fatality and widespread illness across the country. The UK Health Security Agency has documented 207 cases over the past year, with the majority occurring in recent weeks.
The outbreak predominantly affects England, accounting for 199 of the 207 recorded cases. London has reported 47 cases, while Yorkshire and Humber has seen 38. Scotland, Wales, and Northern Ireland have reported six, one, and one case respectively. More than a third of those infected—including infants and people up to age 90—required hospitalization. Two patients developed serious blood poisoning infections, though most individuals recover without medical intervention.
Investigators have identified a specific, identical strain of salmonella across cases, which is unusual for this type of outbreak. Epidemiological evidence points most strongly to consumption of imported eggs as the source, with food businesses linked to 24 cases confirmed to use imported eggs. People appear to have contracted the illness primarily through eating at food establishments rather than consuming home-prepared meals. The UKHSA has stated there is currently no identified connection to eggs or poultry produced within the UK.
Typical salmonella symptoms include stomach cramps, diarrhea, vomiting, and fever, generally developing between 12 and 72 hours after infection. Public health officials stress that thorough cooking and proper hygiene practices—including handwashing after bathroom use and before food preparation—can prevent infection. The Food Standards Agency notes that vulnerable populations, including infants, young children, pregnant people, and older adults, should only consume runny or raw eggs if they bear a British Lion mark or are produced under the Laid in Britain assurance scheme.
Experts anticipate additional cases may emerge as investigations continue. The UKHSA characterizes the risk to the general public as low and states that extensive epidemiological and food chain investigations are ongoing to identify the definitive source.
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