<prompt> The most common sensitive causative organism for Traveller;s diarrhoea is rptE. coliShigellaNorwalk virusRotavirus  <response>: Traveller;s diarrhoea is diarrhoea that develops during, or sholy after, travel abroad. It is caused by eating food, or drinking water, contaminated by germs microbes including bacteria, viruses and parasites. Mainly caused by E.coli. Textbook of microbiology, Ananthanarayan and Paniker 