Antimicrobial resistance of Salmonella isolated from poultry carcasses in Dakar (Senegal)

Abstract

This study was undertaken to estimate the antimicrobial resistance of Salmonella isolated from raw chicken. From November 2003 to April 2004 a total of 120 chicken carcasses were collected from 36 randomly selected sale points (supermarkets, traditional market, poultry slaughter house, flocks) in the urban and periurban zones of Dakar, Sénégal, and examined for the presence of Salmonella. Salmonella was isolated from 75 (62.5%) of the examined samples. Out of the 90 Salmonella isolates obtained, twenty one serotypes were identified, from which the most prevalent were S. Kentuchy 30%, S. Muenster (13.3%), S. Brancaster (8.8%), S. Enteritidis and S. Hadar (6.6%). All Salmonella isolates were tested for their susceptibility to 16 selected antimicrobial agents by the agar diffusion method. Seventy one (78.9%) isolates were resistant to one or more antimicrobials. Out of 71 resistant Salmonella isolates, 33 (46.5%) showed multiple resistance to five or more different antimicrobials. Resistance to ampicillin, trimethoprim, trimethoprim-sulphamethoxazole, tetracyclin and sulphonamides was the most frequent. We found 36 different patterns of multiresistant strains. The high level of antibiotic resistance of foodborne Salmonella isolates in the present study is an indication of indiscriminate and continuous use of subtherapeutic doses of antibiotics in animals. Furthermore, the results showed the possible significance of chicken meat as a source of multiple antimicrobial-resistant Salmonella for human infections and suggest the need for detailed epidemiological study.

Prevalence and antimicrobial resistance of Salmonella serotypes isolated from retail chicken meat and giblets in Iran

“…In this study, high antimicrobial resistance rates were found against nalidixic acid (92.8%), tetracycline (81%), trimethoprim (68.4%), sulfamethoxazole / trimethoprim (61.2%), streptomycin (56.7%), and kanamycin (36.9%). As in the present study, resistance to the above antibiotics have also been frequently reported in a number of other investigations on poultry products in Iran and other countries [12,[18][19][20]28,32,36,[45][46][47][48]. The Salmonella resistance rates to nalidixic acid (92.8%) and tetracycline (81%) found in this study were higher than resistance rates to other antimicrobials because of the overuse of these antimicrobials for treatment and growth promotion in different fields.…”

“…However, the widespread use of antibiotics promotes the development of antimicrobial-resistant bacteria, potentially worldwide [10]. The prevalence of Salmonella serotypes and their antimicrobial resistance in chicken meat and giblets have been reported in many investigations around the world [11][12][13][14][15][16][17][18][19][20]. Despite considerable of progress in human public health, Salmonella still remains a significant foodborne pathogen in the food chain.…”

Antimicrobial Drug Resistance Pattern of <i>Escherichia coli</i> Isolated from Chickens Farms with Colibacillosis Infection

“…Poultry, especially pigeons in certain geographic areas, are a natural reservoir for Shiga toxin producing E. coli (STEC) which is a potential health hazard to people [2]. Various antimicrobials in intensively managed food animals including chickens are often administered through feed or drinking water either for therapy, prophylaxis, or growth promotion [6]. High prevalence of resistance to antimicrobial agents amongst isolates of E. coli isolated from chickens has been reported [7]- [9].…”

Molecular characterization and antibiotic resistance of Salmonella in children with acute gastroenteritis in Abuja, Nigeria

“…Thereafter, it has been documented to be associated with adult infections in North Scotland [20], and more recently in Tunis [21]. Notably, multidrug resistant S. Brancaster isolated from poultry has been reported in Dakar, Senegal [22]. The reported epidemiology of S. Brancaster in the literature is rather limited [23].…”