<prompt> Which of the following causes traveller;s diarrhoeaETECEHECEIECEPEC  <response>: ETEC: Diarrhea caused by ETEC is of two epidemiological types. Endemic in developing countries mild watery diarrhea to fatal disease. Travellers diarrhea seen in persons from non-endemic areas visiting endemic areas. Ref: Textbook of microbiology; Ananthanarayan and panikers; 10th Edition; Pg:285 