The most important determinant of risk is destination. High-risk destinations include most of the developing countries of Latin America, Africa, the Middle East, and Asia. Intermediate risk destinations include most of the Southern European countries and a few Caribbean islands. Low risk destinations include Canada, Northern Europe, Australia, New Zealand, the United States and a number of the Caribbean islands. Diarrhoea is slightly more common in young adults travelling than in older people.
Attack rates are similar in men and women.
Diarrhoea usually strikes within the first week, but may occur at any time during your holiday - and even after returning home. The doctor came out 3 times. I was stuck in bed for days listening to the hotel radio station which played the same record for 48 hours. It was complete agony. If I did venture out I couldn't go more than 5 metres from a toilet.