Characterization of antimicrobial resistant Salmonella enterica serovars Enteritidis and Typhimurium isolates from animal and food in Southern Italy

Abstract

In the last two decades, the emergence and spread of antimicrobial-resistant pathogens, among them Salmonella, has become a serious health hazard worldwide, and specifically the high incidence of multidrug resistance has been encountered widely in many European countries. This study examines the antimicrobial susceptibility of Salmonella enterica strains Typhimurium and Enteritidis isolated in Campania and Calabria region (Southern Italy) from animal and food of animal origin. The relationship of antibiotic resistance phenotype and the presence of some resistance genes has been also investigated. As expected, our results show that resistance to ampicillin, chloramphenicol, streptomycin, sulphonamides and tetracycline is common, although resistance to other antibiotics (i.e.: nalidixic acid) and other resistance patterns occur. The genetic resistant patterns have been partially described for this food-borne pathogen but efforts are needed to realize the complete characterization of antimicrobial resistance genes.

Occurrence of Salmonella enterica and Escherichia coli in raw chicken and beef meat in northern Egypt and dissemination of their antibiotic resistance markers

“…72.4% of Salmonella isolates in Thai meat products were resistant to ampicillin while 71.0% of isolates in Cambodian meat products were resistant to sulfamethoxazole [ 32 ]. Controversially, S. enterica isolated from animals and food of animal origin in Italy were highly resistant to ampicillin, chloramphenicol, streptomycin and tetracycline [ 39 ] and all Salmonella isolated from beef in Tunisia were susceptible to amoxicillin and clavulanic acid [ 40 ].…”

Comparison of antimicrobial resistance patterns and phage types of Salmonella Typhimurium isolated from pigs, pork and humans in Belgium between 2001 and 2006

“…However infection with Salmonella through direct contact with carrier animals on farms and in slaughterhouses can also occur (Fey et al, 2000;Hendriksen, Orsel, Wagenaar, Miko, & van Duijkeren, 2004). Worldwide, one of the most commonly isolated non-typhoid Salmonella serovars in pigs, pork and humans is Salmonella Typhimurium (Astorga Marquez et al, 2007;Boyen et al, 2008;Perugini et al, 2010).…”

Case series of <em>Salmonella</em> spp. infections confirmed by culture test at the hospital clinical laboratory in L’Aquila (Italy), years 2011-2018

“…This is a characteristic of our country, though generally in Europe the most isolated serotype remains S. Enteritidis (22). Confirming this, Gargiulo et al (16) found Salmonella Group B in birds of prey, Chiari et al (7) Perugini et al isolated Salmonella enterica strains Typhimurium and Enteritidis in Italy from animals and food such as bovine, ovine, swine and chicken meat, shellfish, eggs, bovine ad bubaline milk (31).…”