Thursday, April 5, 2007

Hi, I just want to know if Aeromonas is a contagious disease and if can affect the other fishes in the pond. -Eric

Aeromonas is not an infectious disease, it is a secondary infection. It appears after a Koi has had skin damage from: rough handling, brushing up against an abrasive surface (like a pointy rock), a parasitic infection, ect.

There are different strains of Aeromonas, some are worse than others. Aeromonas infections are treated with Tricide-Neo and/or antibiotic injections.

Here's part of an article from Wikipedia:

The Aeromonadales are an order of Proteobacteria, with six genera in two families.

Aeromonas is a gram-negative, facultative anaerobic rod that morphologically resembles members of the family Enterobacteriaceae. Fourteen species of Aeromonas have been described, most of which have been associated with human diseases. The most important pathoges are A. hydrophila, A. caviae, and A. veronii biovar sobria. The organisms are ubiquitous in fresh and brachish water.

Two major diseases associated with Aeromonas are gastroenteritis and wound infections,with or without bacteremia. Gastroentritis typically occurs after the ingestion of contaminated water or food, whereas wound infections result from exposure to contaminated water.

Although some potential virulence factors (e.g. endotoxins, hemolysins, enterotoxins, adherance factors) have been identified, their precise role is unknown. Aeromonas species cause: 1) opportunistic systemic disease in immunocompromised patients, 2) diarrheal disease in otherwise healthy individuals, and 3) wound infections.

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