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Appl Environ Microbiol. 1967 March; 15(2): 417-421
Copyright © 1967 American Society for Microbiology. All Rights Reserved.

Morphological and Biochemical Characteristics of Aeromonas punctata (hydrophila, liquefaciens) Isolated from Human Sources

Microbiology Department, Hospital for Joint Diseases and Medical Center, New York, New York

ABSTRACT

The isolation of Aeromonas punctata (hydrophila, liquefaciens) from feces, throat, and sputum cultures is presented as further evidence that aeromonads are found in man. Morphological and biochemical studies of these strains indicate that the chief differences between the aeromonads and physiologically similar members of the Enterobacteriaceae are found in the polar arrangement of the flagella and in the production of oxidase by the former. The oxidase test should be performed on all paracolon-like bacteria, and a flagella stain should be employed when an oxidase-positive, gram-negative bacillus is isolated. Application of these tests will undoubtedly result in more frequent identification of Aeromonas species from human sources.