摘要: Abstract Travellers' diarrhoea each year affects six million persons. At highest risk are those originating in an industrialized country for a visit the Third World; their incidence of is 20–56% first 14 days stay abroad. Younger travellers, who care less, and with lack nonspecific gastrointestinal immune factors more susceptible. The ailment mostly takes mild short course. usually due to faecally contaminated food beverages, predominant agent being enterotoxigenic E. coli . Therefore, traditional rules nutritional prophylaxis play main role prevention; drug can hardly ever be recommended.