Author(s): Overman TL, Janda JM
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Abstract Fifty-six isolates of four Aeromonas species, which have been documented as causative agents of human infections or isolated from human clinical specimens, were subjected to antimicrobial susceptibility testing using a MicroScan WalkAway conventional (overnight incubation) gram-negative panel. The four species tested and the number of isolates of each were as follows: Aeromonas jandaei, 17; A. schubertii, 12; A. trota, 15; and A. veronii biotype veronii, 12. All isolates of A. trota were susceptible to all antimicrobial agents tested, except cefazolin (20\% of isolates were resistant) and cefoxitin (13\% of isolates were resistant). All isolates of A. schubertii and A. veronii biotype veronii, as well as 88\% of A. jandaei isolates, were resistant to ampicillin. Resistance to ampicillin-sulbactam ranged from 25\% of A. schubertii strains to 100\% of A. veronii biotype veronii strains. Cefazolin resistance ranged from 17\% of A. veronii biotype veronii isolates to 59\% of A. jandaei isolates. Imipenem resistance was detected in 65\% of A. jandaei strains and 67\% of A. veronii biotype veronii strains. A. jandaei displayed resistance to piperacillin and ticarcillin in 53 and 71\% of the isolates, respectively. A. veronii biotype veronii strains were 100\% susceptible to piperacillin and 100\% resistant to ticarcillin. These antibiogram data may be useful in establishing the identification of these four species when members of the genus Aeromonas are isolated from human clinical sources.
This article was published in J Clin Microbiol
and referenced in Journal of Aquaculture Research & Development