Plesiomonas shigelloides

Plesiomonas shigelloides is a species of bacteria and the only member of its genus. It is a Gram-negative, rod-shaped bacterium which has been isolated from freshwater, freshwater fish, shellfish, cattle, goats, swine, cats, dogs, monkeys, vultures, snakes, toads and humans. It is considered a fecal coliform. P. shigelloides is a global distributed species, found globally outside of the polar ice caps.

P. shigelloides has been associated with the diarrheal disease state in humans, but has been identified in healthy humans as well. It can enter the body either through contact with water contaminated by fecal matter or through seafood originating from a contaminated source.