The UK Health Security Agency (UKHSA) has identified a significant increase in cyclospora infections among travellers returning from Mexico, warning of more cases as the summer holiday season continues. Cyclospora is a parasite that affects the stomach and intestines, typically transmitted via contaminated food such as fresh herbs, salad leaves, and soft fruits. It cannot be passed between individuals.
Spike in cases and travel advice
Between April 30 and July 15 this year, UKHSA documented 67 cases among travellers returning to Great Britain: 30 in England, 27 in Scotland, and 10 in Wales. Travel details were obtained for 52 cases, of which 48 had recently been to Mexico, one also visiting the United States. One individual had travelled solely to the US, and another to Kenya. Those returning from Mexico had stayed at various hotels in the Riviera Maya and Cancún areas during all-inclusive breaks, consuming a wide range of food and beverages. Investigations into the origin of the infections continue.
Symptoms and risks
Symptoms of cyclospora infection include frequent watery diarrhoea, stomach cramps, bloating, nausea, excessive wind, low-grade fever, loss of appetite, and weight loss. While most recover without medical intervention, the condition can be more serious or persistent in those with compromised immune systems, who may need antibiotics. Dr Philip Veal, Consultant in Travel Health at UKHSA, stated: "We have recently detected a rise in Cyclospora infections among travellers returning from Mexico. These infections are caused by a parasite and can affect the stomach and intestines."
Precautionary measures
Dr Veal advised: "Travellers to Mexico and other areas where the infection is more common can reduce their risk by following good food and water hygiene measures, including drinking bottled water and eating thoroughly cooked food, even when staying in high-end all-inclusive resorts. We also advise avoiding certain foods such as fresh uncooked berries and herbs, unpeeled fruit and salad items." He added: "If you develop symptoms after returning from travel, such as watery diarrhoea, loss of appetite, weight loss, stomach cramps or pain, bloating, increased wind, nausea, fatigue or other flu-like symptoms, please seek medical attention and inform your healthcare professional of your travel history."
Collaboration and outlook
UKHSA is collaborating with ABTA, Mexican public health authorities, and the National Travel Health Network and Centre (NaTHNaC) to investigate the surge and ensure up-to-date travel health guidance is available. The agency expects travel-associated cases connected to Mexico to keep climbing as more Britons holiday overseas during the summer months. Authorities are also tracking a broader outbreak associated with travel in the United States.
