Is Plesiomonas Shigelloides Shigella?

Plesiomonas can be distinguished from Shigella in diarrheal stools by an oxidase test: Plesiomonas is oxidase positive and Shigella is oxidase negative. Plesiomonas is easily differentiated from Aeromonas sp. and other oxidase-positive organisms by standard biochemical tests.

Is Plesiomonas a lactose fermenter?

P. shigelloides is a motile, facultatively anaerobic gram-negative, oxidase-positive, nitrate-reducing bacillus that does not ferment lactose (1). It possesses two to five polar flagella, and grows readily on enteric agars such as MacConkey, deoxycholate and Hektoen.

Is Plesiomonas indole positive?

Oxidase-positive. Catalase-positive. Lysine-, Ornithine-, and Arginine-Decarboxylase-positive. Indole-positive.

How do you treat Plesiomonas Shigelloides?

The antibiotics given were norfloxacin, wintomylon, colistin, gentamicin, ceftriaxone, co-trimoxazole and ampicillin. In our study, 100% of P. shigelloides isolates were susceptible to quinolones and cephalosporins, while only 9% were susceptible to ampicillin.

Is Plesiomonas Shigelloides motile?

P. shigelloides is a motile, facultatively anaerobic, gram-negative, oxidase-positive bacillus. It is readily isolated from some enteric agars such as MacConkey agar but does not grow well on TCBS medium.

Is Shigella the same as Shigelloides?

The species name “shigelloides” is derived from the fact that many strains cross-react antigenically with Shigella, particularly Shigella sonnei [5]. Outbreaks of diarrheal disease have been associated with contaminated water and oysters containing P.

How do you get Plesiomonas Shigelloides?

Plesiomonas shigelloides is a motile gram-negative rod, member of the family Enterobacteriaceae, and ubiquitous freshwater organism. Most cases are associated with consumption of raw seafood, and the organism has been reported to cause outbreaks.

Does Plesiomonas grow on TCBS?

Pseudomonas, Plesiomonas and Aeromonas can grow on TCBS agar and usually produce blue colonies.

How do you identify Plesiomonas?

Pseudomonas aeruginosa is often preliminarily identified by its typical odor in vitro. The smell is described as grape-like, tortilla-like, or “Philadelphus coronarius-like” (production of aminoacetophenone). Motile by means of one or more polar flagella.

Is Plesiomonas Shigelloides reportable?

shigelloides infections occur in the summer months in tropical and subtropical regions. Infections in the United States are less common, although the true rate of infections in the United States is unknown because it is not a reportable disease.

Is Plesiomonas Shigelloides contagious?

INFECTIOUS DOSE: Unknown. MODE OF TRANSMISSION: Plesiomonas shigelloides can be transmitted through the fecal-oral route, through the consumption of infected seafood (especially oysters), contaminated water and contaminated vegetables, and through exposure to amphibians and reptiles 2 6 11.

Is Plesiomonas Shigelloides common?

Plesiomonas shigelloides, a ubiquitous freshwater inhabitant, has been implicated as a cause of acute diarrhea and, rarely, serious extraintestinal disease.