Infections associated with fish

Soft Tissue Infections

Organism	Micro	Distribution	Other Notes
Aeromonas	Gram-negative bacillus	Worldwide in warm fresh and brackish water	Often following alligator, fish, snake, or freshwater leech bites. Can also cause hemorrhagic diarrhea
Chromobacterium violaceum	Gram-negative bacillus with violet colonies	Soil and water in tropical and subtropical regions	Usually following laceration or bite with exposure to brackish or stagnant water
Edwardsiella tarda	Gram-negative bacillus		Causes emphysematous putrefactive disease of catfish
Shewanella	Gram-negative bacillus	Worldwide in temperate and tropical saltwater
Vibrio vulnificus	Gram-negative bacillus	Warm, low to moderate salinity water, particularly US Atlantic and Guld of Mexico	Particularly associated with oysters. Causes gastroenteritis, bacteremia, and necrotizing soft tissue infections. More common in men.
Erysipelothrix rhusiopathiae	Gram-positive bacillus often misidentified as Lactobacillus or Listeria		Following injury during fish handling.
Mycobacterium marinum and other NTM	Acid-fast bacillus	Fresh and saltwater
Streptococcus iniae	Gram-positive, beta-hemolytic coccus	Freshwater, particularly associated with farm-raised fish