Detection of antimicrobial sensitiveness of isolates of Listeria monocytogenes from food chain using Vitek 2 Compact Biomerieux

Abstract

Sensitivity of 26 Listeria monocytogenes isolates toward 18 antimicrobial substances used in veterinary and human medicine was examined using the automated VITEK 2 Compact system bioMerieux. The obtained results indicate that L. monocytogenes strains isolated from food and food processing environment had resistance to several or more antimicrobial substances that are commonly used in the treatment in animals and humans. Results showed resistance of all 26 (100%) isolates toward Benzylpenicilin, Ampicilin/Sublactam, Oxacillin, Imipenem and Fosfomycine. Also 7 of the isolates (26.9%) were resistant to Clindamiycin, 3 (11.5%) to Quinupristion/Dalfopristin and 1 strain to Teicoplanin, Vancomycin, Tetracycline and Fusic acid, respectively.

Keywords

• Listeria monocytogenes
• antimicrobial resistance
• phenotypic similarity
• MIC
• VITEK 2