Multidrug-Resistance Cases of <i>Listeria monocytogenes</i> Isolated from Fresh Meats

Abstract

The aim of this study is to provide an overview of multidrug-resistance cases of Listeria monocytogenes isolated from fresh meat and meat products from the north of Portugal. Samples of fresh meat preparations and meat products from hypermarkets and small traditional local shops were subjected to microbiological analysis and antimicrobial resistance tests. The strains were identified using morphological and molecular methods. Antibiotic resistance was determined using the Kirby–Bauer disk diffusion method. The overall prevalence of L. monocytogenes among screened samples was 32%. A total of nine isolates were obtained from minced meat, displaying a multidrug-resistance profile.

Keywords

• <i>Listeria monocytogenes</i>
• antimicrobial resistance
• multidrug resistance
• meat