ARGs Detection in Strains Isolated from the Atlantic Salmon () Food Industry: A Retrospective Study.

Among bacterial foodborne pathogens, represents one of the most important public health concerns in seafood industries. This study was designed as a retrospective study which aimed to investigate the trend of antibiotic resistance genes (ARGs) circulation in isolates identified (in the last 15 years) from Atlantic salmon () fresh and smoked fillets and environmental samples. For these purposes, biomolecular assays were performed on 120 strains collected in certain years and compared to the contemporary scientific literature. A total of 52.50% (95% CI: 43.57-61.43%) of these samples were resistant to at least one antibiotic class, and 20.83% (95% CI: 13.57-28.09%) were classified as multidrug resistant. Concerning ARGs circulation, tetracycline (C, D, K, L, S), aminoglycoside (A, A, C2, A1, A2), macrolide (A1, I, II), and oxazolidinone (, A, A) gene determinants were majorly amplified. This study highlights the consistent ARGs circulation from fresh and processed finfish products and environmental samples, discovering resistance to the so-called (CIA) since 2007. The obtained ARGs circulation data highlight the consistent increase in their diffusion when compared to similar contemporary investigations. This scenario emerges as the result of decades of improper antimicrobial administration in human and veterinary medicine.