V. mimicus
V. mimicus (24,102) has been associated with diarrhea following consumption of raw or undercooked seafood (96). Isolated from samples during a search for V. cholerae, V. mimicus can be differentiated from that closely related pathogen by sucrose nonfermentation. The organism will appear as green colonies on thiosulfate citrate bile salts sucrose (TCBS) agar and will grow in most common media without added NaCl. Virulence is poorly characterized, but some strains have been found to possess the cholera toxin gene (111), produce demonstrable CT in a tissue culture assay, and the ctx gene can be detected by PCR amplification.