Health authorities have launched a national investigation into a Salmonella outbreak that has affected 25 people across the United Kingdom, resulting in five hospitalizations. The cases involve a rare strain of the bacteria known as Salmonella Saint Paul, which has sickened at least 20 individuals, including 13 young children.
Geographic Distribution and Timeline
The outbreak cases span multiple regions throughout the UK rather than being concentrated in a single area. Between February 20 and March 4, 2025, infections were reported across nine regions: six cases in the North West of England, four in the West Midlands, three in the South West, and two in the East of England. The East Midlands, North East, London, and South East each recorded one case. Northern Ireland and Wales each confirmed two cases, while Scotland reported one case.
All patients fell ill during the specified timeframe, with no new cases identified since March 2025. The affected individuals ranged in age from 1 to 88 years old, with an average age of 5 years. Among the 25 cases, 16 patients were female and nine were male.
Strain Investigation
The current outbreak involves the same Salmonella saintpaul strain that caused a significant outbreak in 2023, which was linked to imported cantaloupe melons and affected more than 90 people. However, health officials have found no evidence connecting cantaloupe to the current outbreak, and the source remains under investigation.
Salmonella bacteria typically infect the digestive systems of farm animals and commonly affect meat, eggs, and poultry products. The infection usually causes gastrointestinal symptoms and fever that resolve within several days, though it can prove fatal in severe cases.
Symptoms and Health Impact
Salmonella symptoms typically develop 12 to 72 hours after consuming an infectious dose of the bacteria. The illness commonly causes diarrhea, vomiting, and fever. When patients become seriously ill, hospitalization may be necessary due to life-threatening dehydration caused by the infection.
Public Health Response
The UK Health Security Agency (UKHSA) confirmed the investigation into the outbreak.
Health officials recommend that individuals experiencing diarrhea or vomiting wash their hands thoroughly after using the bathroom and avoid handling or preparing food when possible. Patients should remain away from work, and children should stay home from school or nursery until at least 48 hours after symptoms clear to prevent further transmission.
