Shewanella
From IDWiki
Shewanella
Background
- Genus of Gram-negative bacilli within the family Vibrionaceae
- Saprophytic bacteria that cause spoilage of fish and dairy; rarely causes disease in humans
- The only two species that cause disease in humans are:
- Live in warm saltwater, usually in warm countries or in temperate countries during the summer
Clinical Manifestations
- Usually found in polymicrobial infection
- Most commonly associated with cellulitis or bacteremia
- Cellulitis typically occurs after saltwater exposure to broken skin (or occasionally freshwater exposure)
- Can complicated chronic leg ulcers, burns, wounds
- Can also be found in abdominal or biliary tract infections, respiratory infections, ear infections
- Rarely found in bone, urianry tract, eye infections
- Single case reports of endocarditis, meningitis, aneurysm infection
Management
- Generally resistant to penicillin, amoxicillin, and first-generation cephalosporins
- Generally susceptible to third-generation cephalosporins, piperacillin, carbapenems, aminoglycosides, and fluoroquinolones
- Variable susceptibility to amoxicillin/clavulanic acid, colistin, TMP-SMX
Further Reading
- Shewanella algae and Shewanella putrefaciens: clinical and microbiological characteristics. Clin Microbiol Infect. 2005;11(5):347-352. doi: 10.1111/j.1469-0691.2005.01108.x
- Human Infection with Shewanella putrefaciens and S. algae: Report of 16 Cases in Martinique and Review of the Literature. Am J Trop Med Hyg. 2013;89(1):151-156. doi: 10.4269/ajtmh.13-0055
