Prevalence and Antimicrobial Resistance of Salmonella Isolated from Meat and Meat Products in Algiers (Algeria)

Abstract

This study was conducted in order to estimate the proportion of raw meat and processed meat products contaminated by Salmonella in the region of Algiers, Algeria, to identify serovars and to determine the antimicrobial resistance patterns of isolates. Out of the total 314 samples (144 of raw red meat and meat products, 128 of raw poultry meat and poultry products, and 42 of processed meat products) collected from various retail outlets, 61 (19.43%) were tested positive for Salmonella. The most significant occurrences were recorded for the categories of red meat (23.61%, n=34) and poultry (17.97%, n=23). Among the 64 isolates recovered, 21 different serovars were identified and two strains were nontypable. The most prevalent serovars were Salmonella Anatum (14.6%, n=9), Salmonella Altona (12.50%, n=8), Salmonella Corvallis (7.81%, n=5), Salmonella Enteritidis (7.81%, n=5), and Salmonella Typhimurium (7.81%, n=5). Sixty-two Salmonella isolates were tested for their susceptibility to 32 selected antimicrobial agents. Fifty-six (90.32%) isolates were resistant to at least one antimicrobial, of which 20 (32.26%) showed multidrug resistance. Resistance to sulphonamides (87.10%, n=54) was the most common. Resistance rates were lower to nalidixic acid (16.13%, n=10), streptomycin (16.13%, n=10), and tetracycline (12.90%, n=8), while resistance to pefloxacin was estimated at 4.84% (n=3). Fourteen different resistance patterns were observed. The "ACSSuT" pentaresistance pattern was observed in three of the Salmonella Typhimurium strains. The obtained results show that these foodstuffs are a potential source of antimicrobial-resistant Salmonella for human infections.

Prevalence and antimicrobial resistance of Salmonella isolated from bovine and ovine samples in slaughterhouses of Algiers, Algeria

“…According to the results shown in table 1, bovine samples were more contaminated (14.28%) than ovine samples (7.14%). This result in agreement with previous Algerian data (Nouichi and Hamdi, 2009;Mezali and Hamdi, 2012), could be due to the particular susceptibility of bovine species to Salmonella infection (Nouichi and Hamdi, 2009).…”

“…Resistance to streptomycin was quite common (69.05%, n=58) and corroborates the finding of Elgroud et al (2009;58%) and Aouf et al (2011;68.75%), while 17.86% (n=15) of isolates were found resistant to tetracyclines, which is lower than that noted by Bouzidi et al (2012;36.9%) and Aouf et al (2011;100%). As for sulphonamides, our result (32.14%) was higher than that reported in Algeria by Bounar-Kechih et al (2012) and Mezali and Hamdi (2012) who recorded 13% and 16.13%, respectively. Streptomycin, sulphonamides and tetracycline are old first-intention molecules and have been widely used in animal husbandry.…”

Recovery and prevalence of antibiotic-resistant Salmonella from fresh goat meat in Arusha, Tanzania

“…A low prevalence of Salmonella Typhimurium was also reported by others in other food animal products such as 11% in beef (Shilangale et al, 2015), 10.8% in cattle and sheep meat and 4.35% in poultry meat (Mezali and Hamdi, 2012). There was no significant difference (p = 0.65) in the prevalence between large and small facilities (Table 1).…”

An Algerian perspective on non-typhoidal Salmonella infection

“…To date, these studies have been reported information from various cities in Algeria, including Algiers, Boumerdes, TiziOuzou, Bouira, Bejaia, Constantine, Batna, Annaba and El Taref (Figure 1) and are summarized below [10,[28][29][30][31][32][33].…”

“…One study from Algiers showed the detection of multiple Salmonella serovars contaminating a wide variety of raw meat and processed meat products, particularly from laying-hens [28,32] (Table 1). It is thought that this contamination probably takes place during meat processing at the retail level where more surfaces are exposed, as meat is deboned, cut into pieces, and minced [34].…”