Plesiomonas shigelloides was thought to be the cause of diarrhea in six patients seen in Los Angeles. Although this organism is considered to be a cause of diarrhea in the Orient, it has infrequently been noted to be associated with diarrhea in North America.
Reinhardt JF, George WL. Plesiomonas shigelloides—Associated Diarrhea. JAMA. 1985;253(22):3294-3295. doi:10.1001/jama.1985.03350460094029