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Traveller’s diarrhoea (TD) as the name suggests is diarrhoea or frequent loose/watery stools, that develop during or shortly after return from travel abroad. It remains the most common travel-related health event in those travelling internationally,1 affecting approximately 80 million travellers annually.2 In most cases symptoms are mild, however, in 3% of all travellers the disease will prevent them from participating in their usual activities or they will need to seek medical help.1
Recent evidence suggests that TD prevalence ranges from 20 to 56% of international travellers visiting a tropical or sub-tropical country, who travel for less than 100 days.1 Other estimates suggest TD affects 10 to 20% of adults and children travelling to moderate to high-risk destinations.3-5 The risk appears to be highest in the first week of travel and incidence depends on a variety of factors including the traveller themselves, type of trip, destination, season, diet, and the activities undertaken.6,7
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