Plesiomonas shigelloides

Definition

Plesiomonas shigelloides is a gram-negative, facultatively anaerobic bacterium that can cause gastroenteritis in humans. It is typically found in freshwater and marine environments.

5 Must Know Facts For Your Next Test

1. Plesiomonas shigelloides is associated with waterborne and foodborne outbreaks of diarrhea.
2. The bacterium is oxidase-positive, which helps differentiate it from other Enterobacteriaceae.
3. Common symptoms of infection include watery diarrhea, abdominal cramps, nausea, and sometimes fever.
4. It is more prevalent in tropical and subtropical regions but can be found worldwide.
5. Antibiotic treatment may be necessary for severe cases or immunocompromised patients.

Review Questions

• What are the typical symptoms of Plesiomonas shigelloides infection?
• How is Plesiomonas shigelloides differentiated from other Enterobacteriaceae?
• In what types of environments is Plesiomonas shigelloides commonly found?

Related terms

Enterobacteriaceae: A large family of gram-negative bacteria that includes many pathogens such as Escherichia coli and Salmonella.

Gastroenteritis: An inflammation of the gastrointestinal tract that involves both the stomach and small intestine, leading to symptoms like diarrhea and vomiting.

Oxidase Test: A biochemical test used to identify bacteria that produce cytochrome c oxidases; important for differentiating Plesiomonas shigelloides from other similar bacteria.