Holidaymakers warned about ‘explosive diarrhoea’ cyclospora parasite infection

• Cyclospora outbreaks are increasing in the UK (67 cases since April), primarily affecting recent travellers from Mexico—consider this diagnosis in patients presenting with persistent diarrhoea post-travel.
• Cyclosporiasis causes "explosive diarrhoea" and typically requires specific antimicrobial treatment (trimethoprim-sulfamethoxazole); standard antidiarrhoeal agents are ineffective and may be contraindicated.
• Advise patients travelling to endemic areas on food and water safety precautions; the parasite is transmitted through contaminated produce and water, making prevention education crucial for at-risk populations.

The UK is seeing a sharp rise in cases - 67 since April - with many of them among travellers returning from Mexico.

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