Antimicrobial susceptibility of<i>Salmonella</i>strains isolated from swine in Catalonia, Spain

Mateu, Enric; Martín, M.; Darwich, Laila; Mejía, W.; Frías, N.; Peña, F. J. García

doi:10.1136/vr.150.5.147

Cited by 18 publications

(34 citation statements)

References 21 publications

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“…In accordance with other authors, we confirmed correlation between high prevalence of antibiotic resistance and the serotype Typhimurium (Baggesen and Aarestrup, 1998;Molbak et al, 1999;Gebreyes et al, 2000;Gebreyes and Altier, 2002;Yang et al, 2002). Only results from Spain and Brazil differed slightly when reporting the most frequent multiresistances in the serotypes Anatum and Agona (Mateu et al, 2002;Oliveira et al, 2002). Unlike the findings of Gebreys et al (2000) and Gebreys and Altier (2002), we found a relatively low frequency of resistance towards amoxycillin/clavulanic acids (18.6%).…”

Section: Discussionsupporting

confidence: 92%

Antibiotic resistance of Salmonella spp. isolates from pigs in the Czech Republic

Šišák¹,

Havlíčková²,

Hradecká³

et al. 2006

Vet. Med. - Czech

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A total of 126 Salmonella spp. isolates from pigs belonging to 13 serotypes (Typhimurium, Derby, Infantis, Enteritidis, Agona, Kaapstad, London, Montevideo, Bredeney, Give, Oritamerin, Schwarzengrund and Tennessee) were tested for sensitivity to 14 antibiotics. Resistance to 1-8 antibiotics was demonstrated in 64 isolates (59.8%), classified into seven serotypes with the most frequent being Salmonella typhimurium (n = 54). S. typhimurium strains were found to be the most resistant to streptomycin (91.5%), sulphonamides (88.1%), ampicillin (86.4%), tetracycline (84.7%) and chloramphenicol (83.0%), displaying the ACSSuT phenotype. In all strains of this phenotype (n = 27), the gene for integrase (int1) and resistance genes bla PSE-1 , floR, aadA2, sul1 and tetG were detected by PCRs. In some of the strains, additional resistance to amoxycillin/clavulanic acid, sulphamethoxazole/trimethoprim, nalidixic acid and enrofloxacin was found.

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Section: Discussionsupporting

confidence: 92%

Antibiotic resistance of Salmonella spp. isolates from pigs in the Czech Republic

Šišák¹,

Havlíčková²,

Hradecká³

et al. 2006

Vet. Med. - Czech

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“…Profile AR 0 (n ϭ 7) was present only among monophasic isolates. Subtypes AR 1 to AR 12 were closely related to subtype AR 0 (similarity, Ͼ85%), and subtypes AR 13 and AR 14 were possibly related to subtype AR 0 (similarity, Ͼ76% and Յ85%). Patterns AT, AV, BT, BV, CS, and CT grouped a total of 15 strains into 14 different profiles and were observed only among serovar Typhimurium or serovar 4,5,12:Ϫ:Ϫ isolates.…”

Section: Resultsmentioning

confidence: 99%

“…At present, serovar Typhimurium is the second most frequent type of Salmonella isolated from human, food, and animal samples in Spain (13,22). The majority of these isolates correspond to phage types DT104, DT104b and DT U302 (20,21,22,23).…”

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confidence: 99%

Several Salmonella enterica subsp. enterica Serotype 4,5,12:i:− Phage Types Isolated from Swine Samples Originate from Serotype Typhimurium DT U302

Zapata¹,

Tello

Mejía³

et al. 2003

J Clin Microbiol

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Pulsed-field gel electrophoresis, plasmid profiling, and phage typing were used to characterize and determine possible genetic relationships between 48 Salmonella enterica subsp. enterica isolates of pig origin collected in Catalonia, Spain, from 1998 to 2000. The strains were grouped into 23 multidrug-resistant fljB-lacking S. enterica serovar 4,5,12:i:؊ isolates, 24 S. enterica serovar Typhimurium isolates, and 1 S. enterica serovar 4,5,12:؊:؊ isolate. After combining the XbaI and BlnI macrorestriction profiles (XB profile), we observed 29 distinct subtypes which were grouped into seven main patterns. All 23 of the 4,5,12:i:؊ serovar strains and 10 serovar Typhimurium isolates were found to have pattern AR, and similarities of >78% were detected among the subtypes. Three of the serovar Typhimurium DT U302 strains (strains T3, T4, and T8) were included in the same 4,5,12:i:؊ serovar cluster and shared a plasmid profile (profile I) and a pattern of multidrug resistance (resistance to ampicillin, chloramphenicol, streptomycin, sulfonamide, tetracycline, gentamicin, and trimethoprim-sulfamethoxazole) commonly found in monophasic isolates. This led us to the conclusion that strains of the S. enterica 4,5,12:i:؊ serovar might have originated from an S. enterica serovar Typhimurium DT U302 strain.

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“…3,13,30,31 On the basis of the present results and on data obtained by Timmerman et al, 29 tetracycline and amoxicillin seem to be the most commonly used antimicrobial agents in the Belgian pig industry. As reported in the literature, the frequent occurrence of resistance to tetracycline, streptomycin, sulfonamide, and ampicillin is generally attributed to the frequent use of those molecules in veterinary medicine.…”

Section: Discussionmentioning

confidence: 61%

Variability in Antimicrobial Resistance amongSalmonella entericaStrains from Fattening Pigs and Sows

Nollet¹,

Houf²,

Dewulf³

et al. 2006

Microbial Drug Resistance

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The aim of this study was to determine the prevalence of antibiotic resistance and different resistance patterns for Salmonella isolates collected from Belgian sows and fattening pigs at different ages and at slaughter. The most frequently isolated serotypes were S. Typhimurium (42.3%), S. Derby (25.1%), S. Goldcoast (7.3%), and S. Infantis (4.8%). All 901 isolates were submitted to antimicrobial susceptibility testing for 14 compounds using the disc agar diffusion test. The highest percentage of resistance was found to oxytetracycline (34.2%), streptomycin (32.5%), sulfamethizole (27.6%), and ampicillin (24.9%). Three of the isolates showed resistance to cephalosporins and none to second-generation fluoroquinolones. Multiresistance (resistance to > or =2 antimicrobials) was observed in 33.2% of the strains. Differences in resistance patterns were observed between and within serotypes as well as genotypes. A significant lower proportion (p < 0.01) of resistant strains was recovered in fecal samples from sows (23/56) than from fattening pigs during the weaning (30/30), growing (79/85), and finishing periods (45/52). The proportion of resistant strains recovered from fecal samples taken at the herd (154/167) was higher than in the samples collected at the slaughterhouse (75/140). When designing antimicrobial resistance surveillance programs for Salmonella in pigs, it is important to take multiple samples within each herd from both sows and fattening pigs at different time points.

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Antimicrobial susceptibility ofSalmonellastrains isolated from swine in Catalonia, Spain

Cited by 18 publications

References 21 publications

Antibiotic resistance of Salmonella spp. isolates from pigs in the Czech Republic

Antibiotic resistance of Salmonella spp. isolates from pigs in the Czech Republic

Several Salmonella enterica subsp. enterica Serotype 4,5,12:i:− Phage Types Isolated from Swine Samples Originate from Serotype Typhimurium DT U302

Variability in Antimicrobial Resistance amongSalmonella entericaStrains from Fattening Pigs and Sows

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