<prompt> Most common strain of E.coli giving rise to travellers diarrhea is -Entero-invasive E.coli EICEEntero-pathogenic E.coli EPEEntero-toxigenic E.coli ETECEntero-aggregative E.coli EAEC  <response>: Ans. is c i.e.t Entero-toxigenic E.coli Ref: Ananthanarayan 8the p. 276 7thep. 278;Harrison 18the p. 1087 table 128.3 17the p. 815Jo Entero-toxigenic E.coli is the most common cause of travellers diarrhea.o Other organisms causing travellers diarrhea are:o Enteroaggregative E.colio Vibrio choleraeo Shigellao Rotavirus and Norwalk-like vineso Salmonellao Entamoeba histolyticao Compylobacter-jejunio Giardia lambliao Aeromonaso Cryptosporidiumo Plesiomonaso Cyclospora 