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Aeromonas infections

J Glenn Morris, Jr, MD, MPHTM
Amy Horneman, PhD, MS, SM (ASCP)
Section Editor
Stephen B Calderwood, MD
Deputy Editor
Allyson Bloom, MD


The genus Aeromonas consists of gram-negative rods widely distributed in freshwater, estuarine, and marine environments [1,2]. Aeromonas species grow at a range of temperatures, although they are isolated with increasing frequency during warmer months (May through October in the Northern hemisphere). Aeromonas species cause a wide spectrum of disease syndromes among warm- and cold-blooded animals, including fish, reptiles, amphibians, mammals, and humans [3,4].


The genus Aeromonas was re-categorized from the family Vibrionaceae to the family Aeromonadaceae in the mid-1980s, when phylogenetic evidence from molecular studies became available to support this distinction [2,5,6].

The genus Aeromonas has been divided into two major groups [7]:

Motile, mesophilic species, including eight that can cause disease in humans (table 1).

Non-motile, psychrophilic species that generally cause disease only in fish.


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Literature review current through: Jul 2017. | This topic last updated: Mar 03, 2017.
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