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Journal of Clinical Microbiology, March 1999, p. 706-708, Vol. 37, No. 3
Pathology and Laboratory Medicine Service,
Veterans Affairs Medical Center, Lexington, Kentucky
40511-10931;
Department of Pathology and
Laboratory Medicine, University of Kentucky Lexington Medical Center,
Kentucky 40536-02982; and
Microbial
Diseases Laboratory, Division of Communicable Disease Control,
California Department of Health Services, Berkeley, California
94704-11013
Received 22 June 1998/Returned for modification 16 October
1998/Accepted 13 November 1998
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.
0095-1137/99/$00.00+0
Antimicrobial Susceptibility Patterns of
Aeromonas jandaei, A. schubertii, A. trota, and A. veronii Biotype veronii
*
Corresponding author. Mailing address: Pathology and
Laboratory Medicine (113CDD), VA Medical Center, Lexington, KY
40511-1093. Phone: (606) 233-4511. Fax: (606) 281-4970. E-mail:
toverma{at}pop.uky.edu.
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