Antimicrobial resistance of B-haemolytic Aeromonas hydrophila strain isolated from rainbow trouts - Oncorhynchus mykiss
2013
Stratev, D., Thrakia University, Stara Zagora (Bulgaria) | Vashin, I., Thrakia University, Stara Zagora (Bulgaria) | Daskalov, H., NDRVMI, Bulgarian Food Safety Agency, Sofia (Bulgaria)
The aim of this study was to isolate β-haemolytic Aeromonas hydrophila strains from live rainbow trouts - Oncorhynchus mykiss destined for human consumption and to investigate their resistance to antimicrobial drugs. Sterile swab samples were collected from 52 rainbow trouts. Fifteen - 28.8% β-haemolytic Aeromonas strains were isolated from collected 52 swab samples. Through API 20 NE, 12 of them were identified as A. hydrophila. The sensitivity of 8 isolates to antimicrobial drugs and drug combinations was determined using MICRONAUT-SB Varia KH I 2 microplates. All isolates were sensitive to ceftazidime, ciprofloxacin, co-trimoxazole and levofloxacin, and resistant to amikacin, amoxicillin/clavulanic acid, ampicillin/sulbactam, cefazolin, cefotiam, clindamycin, erythromycin, imipenem, linezolid, meropenem, teicoplanin and vancomycin. The percentages of resistance of isolates to the other tested chemotherapeutic drugs were variable. The presence of β-haemolytic A. hydrophila strains, resistant to antimicrobial drugs in rainbow trouts poses a potential risk for consumers health.
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