<prompt> Travellers diarrhoea is caused by:ShigellaE.ColiE. histolyticaGiardiasis  <response>: Ans. is b i.e. E. Coli Travellers Diarrhoea is caused by all of the organism given in the Question . But the most common cause of travellers diarrhoea is Enterotoxigenic strain of E. Coli.Other organisms causeing Travellers Diarrhoea are:ShigellaSalmonellaYersiniaCampylobacterGiardiaEntamoeba histolytica 