Aeromonas is a topic covered in the Johns Hopkins Antibiotic (ABX) Guide.

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  • Gram-negative bacillus, facultative anaerobe. A ubiquitous water organism.
    • Oxidase positive but lactose-fermenting, motile with flagella ( Figure).
      • Cytochrome oxidase, catalase and indole positive.
      • Able to ferment maltose, D-galactose and trehalose.
    • Found in warmer climes, primarily fresh or brackish waters.
    • May contaminate food, especially fish.
  • A. hydrophila is the most common and important human pathogen, also A. caviae and A. veronii biovar sobria.

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Last updated: November 29, 2015