Difference between revisions of "Vibrio species"

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*Enteric diseases in humans
 
*Enteric diseases in humans
 +
*''Vibrio alginolyticus'' and ''Vibrio penaicida'' cause disease in farm raised shrimp growout ponds
 +
*''Vibrio harveyi'' can cause mortality in shrimp fry (luminescent vibriosis)
 +
*''Vibrio parahemolyticus'' and ''Vibrio vulnificus'' cause foodborne illness associated with undercooked seafood in humans
 
*''Vibrio metschnikovii'' causes enteric disease in chickens
 
*''Vibrio metschnikovii'' causes enteric disease in chickens
 
*''Listonella anguillarum'' skin lesions and septicaemia in fish and eels
 
*''Listonella anguillarum'' skin lesions and septicaemia in fish and eels
 
  
 
===Diagnosis===
 
===Diagnosis===
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*Isolation and identification from lesions
 
*Isolation and identification from lesions
 
*Widespread in environments
 
*Widespread in environments
 
+
*Growth on 2% NaCl TSA
 +
*TCBS (Thiosulfate-citrate-bile salts-sucrose agar) is the selective media of choice
 +
*Green colonies on TCBS are usually ''Vibrio harveyi'' or ''parahemolyticus''
 +
*Yellow colonies ''can be'' ''Vibrio cholerae''
  
 
===Treatment===
 
===Treatment===

Latest revision as of 13:12, 2 October 2012

Overview

  • Gram negative bacteria
  • Found in aquatic environments
  • Opportunistic pathogens of fish, reptiles and rarely mammals
  • Vibrio cholerae causes cholera in humans, a severe enteric disease

Characteristics

  • Curved rods
  • Catalase and oxidase positive
  • Facultative anaerobes
  • Motile
  • Grow on non-enriched media; NaCl supplementation required for Vibrio species
  • Found in salt water


  • Enteric diseases in humans
  • Vibrio alginolyticus and Vibrio penaicida cause disease in farm raised shrimp growout ponds
  • Vibrio harveyi can cause mortality in shrimp fry (luminescent vibriosis)
  • Vibrio parahemolyticus and Vibrio vulnificus cause foodborne illness associated with undercooked seafood in humans
  • Vibrio metschnikovii causes enteric disease in chickens
  • Listonella anguillarum skin lesions and septicaemia in fish and eels

Diagnosis

  • Isolation and identification from lesions
  • Widespread in environments
  • Growth on 2% NaCl TSA
  • TCBS (Thiosulfate-citrate-bile salts-sucrose agar) is the selective media of choice
  • Green colonies on TCBS are usually Vibrio harveyi or parahemolyticus
  • Yellow colonies can be Vibrio cholerae

Treatment

  • Antibiotics including Gentamicin against Vibrio species