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The Independent UK
The Independent UK
Storm Newton

Giardiasis: UK travellers warned over parasitic stomach bug as cases soar

People returning from holiday are being told to take precautions against a parasitic stomach bug following a 10 per cent annual surge in infections.

Figures from the UK Health Security Agency (UKHSA) show 6,069 giardiasis cases were reported in 2025 – up from 5,450 the previous year and the highest total since 2016.

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