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Epidemiology

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

There are regional differences in the risk of travellers' diarrhoea and estimates of incidence rates vary in different studies:

  • low-risk areas
    • Western Europe, the United States, Canada, Australia, New Zealand and Japan
    • around 7% of travellrs experience travelers diarrhoea while visiting these countries

  • intermediate risk areas
    • southern Europe, Israel, South Africa, some parts of the Caribbean and the Pacific islands
    • incidence rates of travelers diarrhoea is between 8 and 20 %

  • high risk areas
    • most of Asia, the Middle East, Africa, and Latin America;
    • more than 20% of travelers from a high-income country will experience diarrhoea when visiting these areas (1)

Between 2004 and 2008, there were 24,332 cases of laboratory confirmed travel-associated gastrointestinal (GI) illness reported in England, Wales and Northern Ireland

  • Salmonella spp. (non typhoid) was responsible for 50% of cases
  • other organisms included Campylobacter spp.,Shigella spp., Giardia lamblia, and Cryptosporidium spp

Reference:

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