A 27 year old presents with two days of diarrhea, nausea and vomiting

A 27 year old presents with two days of diarrhea, nausea and vomiting. He was vacationing in Bangladesh and just returned yesterday. He denies any blood in his diarrhea and states it is “white with mucus in it.” He states there is a very foul smell to it and it is copious – up to one liter an hour. He denies any fever or abdominal pain. He denies any recent hospitalizations or antibiotics. He states he did not perform a pre-travel visit and is against receiving vaccinations. Of the below options, which is the most likely etiology causing this patient’s symptoms? Group of answer choices Vibrio cholera Clostridioides difficile Campylobacter Shigella