The UKHSA has reported 67 cases of cyclosporiasis since April, primarily among travelers returning from Mexico, prompting health warnings.
Key facts
- •The UKHSA recorded 30 cases in England, 27 in Scotland, and 10 in Wales between April 30 and July 15, 2026.
- •A separate outbreak in the US has affected more than 18,000 people across 45 states, though the source remains unidentified.
- •The UKHSA anticipates further cases due to increased summer travel to Mexico and the US.
- •Travelers returning with symptoms are advised to seek medical attention and disclose their travel history to healthcare providers.
The UK Health Security Agency (UKHSA) has issued a warning regarding a rise in cases of cyclosporiasis, an infectious disease caused by the cyclospora parasite. Since April, 67 cases have been identified in the UK, with the majority of affected individuals having recently traveled to Mexico. The illness, which is not endemic to the UK and does not spread between people, is typically contracted through contaminated food or water.
By the numbers
Infection Details and Symptoms
The parasite can contaminate items such as fresh herbs, salads, and soft fruits. Symptoms of the intestinal illness include frequent, explosive watery diarrhea, with some patients reporting the need to use the toilet up to 20 times daily. Other symptoms include stomach cramps, bloating, nausea, fatigue, and weight loss. While many cases resolve without intervention, antibiotics are available for severe or prolonged infections.
Travel Links and Prevention
Of the 52 cases where travel history was available, 48 individuals had visited Mexico, specifically the Riviera Maya or Cancún regions. Affected travelers reported staying at various hotels and consuming diverse food and drinks as part of all-inclusive packages. Health officials advise travelers to consume bottled water and thoroughly cooked food, while avoiding uncooked berries, herbs, unpeeled fruit, and salad items.
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This article was independently rewritten by ManyPress editorial AI from reporting originally published by BBC Health.
