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Page No. : 1-11

ABSTRACT

Study on 355 samples for incidence, drug resistance pattern and relationships among prevalent Aeromonas spp. revealed incidence of aeromonads in 4.35%, 6.45%, 15.71% and 28% canine, human, chicken and fish samples, respectively. Species distribution comprised 28.57% A. caviae, 24.49% A. hydrophila, 40.82% A. veronii biotype (bt) sobria, 4.08% A. trota and 2.04% A. veronii bt veronii. From statistical analysis of biochemical data, existence of distinct clusters according to source of origin among A. hydrophila and among A. veronii bt sobria were recognized. Analysis of randomly amplified polymorphic DNA – PCR fingerprints delineated close relationship among fish isolates and within human isolates. Sensitivity testing of isolates against 22 antimicrobials revealed significant resistance. Human isolates were most resistant while fish isolates were least resistant. Cluster analysis of resistance profiles separated human isolates from other isolates. Results of the study revealed wide prevalence of multi drug resistant Aeromonas spp. in various sources indicating significant public health hazard.

Keywords: Aeromonas, epidemiology, multi-drug resistance, PCR