A stool specimen is submitted for culture from a patient wit…

A stool specimen is submitted for culture from a patient with gastroenteritis, nausea, and vomiting. A gram-negative rod grows on TCBS agar as a large green colony type. Additional screening characteristics include:TSI: K/A, H2S negNutrient broth with 0% NaCl: no growthNutrient broth with 3% NaCl: growthThe most probably presumptive identification of this isolate is