International Spread of Multidrug-resistant<i>Salmonella</i>Schwarzengrund in Food Products

Aarestrup, Frank Møller; Hendriksen, René S.; Lockett, Jana; Teates, Kathryn S.; McDermott, Patrick F.; White, David G.; Hasman, Henrik; Sørensen, Gitte; Bangtrakulnonth, Aroon; Pornreongwong, Srirat; Pulsrikarn, Chaiwat; Angulo, Frederick J.; Gerner‐Smidt, Peter

doi:10.3201/eid1305.061489

Cited by 126 publications

(111 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The fact that Salmonella serotypes in animals were similar to those in humans (35)(36)(37) indicates the role of contaminated foods in the spread of Salmonella to humans. Interestingly, S. Schwarzengrund, which has been reported to be an internationally spread strain (38), was found in this study. A high percentage of E. coli contamination was also observed.…”

Section: Discussionsupporting

confidence: 44%

Molecular Characterization of Antibiotic-Resistant Bacteria in Contaminated Chicken Meat Sold at Supermarkets in Bangkok, Thailand

Chaisatit

Tribuddharat

Pulsrikarn³

et al. 2012

Jpn J Infect Dis

Self Cite

View full text Add to dashboard Cite

SUMMARY:We assessed contamination by antibiotic-resistant bacteria in chicken meat obtained from supermarkets in Bangkok, Thailand. The prevalence of Salmonella enterica and Escherichia coli was 18.7z (14/75) and 53z (106/200), respectively. Most probable number (MPN) analysis showed that 56.7z of the samples (34/60) were in violation of the limit of allowable coliform bacteria in chicken meat, for which the maximum is 46,000 MPN/g. Multidrug-resistant phenotypes of both S. enterica and E. coli were found. The presence of class 1 integrons was demonstrated by polymerase chain reaction (PCR) and dot-blot hybridization. PCR showed that class 1 integrons were present in 42.9z (6/14) and 37.7z (40/106) of S. enterica and E. coli isolates, respectively. Resistance genes identified in this study were aadA2, aadA4, aadA22, and aadA23 (for aminoglycoside resistance); dfrA5 (for trimethoprim resistance), and lnuF (for lincosamide resistance). Four S. enterica isolates underwent multilocus sequence typing and the results were sequence type (ST) 50, ST 96, ST 1543, and ST 1549, which matched well with strains from many countries and reflected an international spread. Our study revealed that class 1 integrons have spread into community sources and might play an important role in horizontal antibiotic resistance gene transfer.

show abstract

Section: Discussionsupporting

confidence: 44%

Molecular Characterization of Antibiotic-Resistant Bacteria in Contaminated Chicken Meat Sold at Supermarkets in Bangkok, Thailand

Chaisatit

Tribuddharat

Pulsrikarn³

et al. 2012

Jpn J Infect Dis

Self Cite

View full text Add to dashboard Cite

show abstract

“…High prevalence of nontyphoidal Salmonellae has also been reported from other parts of the world [22][23][24], indicating that infections with non-typhoidal Salmonellae are a global problem. Infections due to multidrug resistant S. enterica serotype Typhi have also been regarded as major problems in several parts of the world [25].…”

Section: Discussionmentioning

confidence: 81%

Salmonella isolates’ serotypes and susceptibility to commonly used drugs at a tertiary care hospital in Riyadh, Saudi Arabia

Somily

Sayyed

Habib

et al. 2011

J Infect Dev Ctries

View full text Add to dashboard Cite

Introduction: Resistance of Salmonella to therapeutic agents currently being used for treatment of Salmonella infections is emerging as a global problem. This study aimed to assess the prevalence of Salmonella serotypes and their susceptibility patterns to commonly used drugs for treatment of Salmonella infections including quinolones. Correlation between nalidixic acid susceptibility of these isolates and their ciprofloxacin minimum inhibitory concentrations was also sought. Methodology; Salmonella isolates (n=213) were collected between January 2007 and May 2009 at King Khalid University Hospital in Riyadh, Saudi Arabia. The isolates were serotyped and their susceptibilities to commonly used first-line anti-Salmonella drugs (ampicillin, ceftriaxone, trimethoprim/sulfamethoxazole, nalidixic acid and ciprofloxacin) were determined using the automated Microscan system, the Kirby-Bauer disk diffusion method, and E-test. Results: The most frequently detected serotype was D 1 (37%) followed by the serotypes, B (24%) and C 1 (11%). Non-typable Salmonella isolates detected using available conventional Salmonella anti-sera were (11%). Overall resistance rates to nalidixic acid, ampicillin, trimethoprim/sulfamethoxazole and ceftriaxone were 99/213 (46%), 43/213 (20%), 34/213 (16%) and 7/213 (3%), respectively. Of the total isolates, 117 (55%) had a ciprofloxacin MIC of <0.125 µg/ml and among these 105 (90%) were susceptible to nalidixic acid. The remaining 96 (45%) isolates had a ciprofloxacin MIC of ≥0.125 µg/ml and among them, 83 (86.5%) were resistant to nalidixic acid. Conclusions: The majority of Salmonella isolates in this study were non-typhi serotypes. Significantly higher proportions of Salmonellae were resistant to nalidixic acid and ciprofloxacin and a vast majority of nalidixic acid resistant organisms exhibited decreased susceptibility to ciprofloxacin.

show abstract

“…Such resistance is the cause of therapeutic failure against the pathogen, and increase infection severity and recovery time (Angkititrakul et al 2005). Aarestrup et al (2007) reported 89 % of Salmonella isolates from chicken meat in Thailand, were found resistance to nalidixic acid. The S. enterica isolate in the current study also showed resistance against nalidixic acid.…”

Section: Discussionmentioning

confidence: 99%

Isolation of Salmonella from ready-to-eat poultry meat and evaluation of its survival at low temperature, microwaving and simulated gastric fluids

Akbar

Anal

2014

J Food Sci Technol

View full text Add to dashboard Cite

A study was conducted to evaluate the risk of Salmonella contamination and its survival at different stages in chill ready-to-eat poultry meat products chain. Samples (n= 181) were collected and examined for the presence of Salmonella species. The bacteria were initially identified against polyvalent antisera "O" and "H", followed by confirmation with 16 s rDNA. The single Salmonella, isolate from the tested food samples showed 99.8 % phylogenetic similarity with Salmonella enterica. It was further evaluated for antibiotic sensitivity pattern and found resistant to four antibiotics including ampicillin, chloramphenicol, tetracycline and nalidixic acid. Salmonella associated with ready-to-eat poultry meat products were found active at storage temperature ≥4°C in a challenge study. It was revealed that shape and weight of the meat pieces have direct influence on the reduction of pathogens during microwave heating. The 30 and 60 s microwaving (with radiation power fixed at 900 W) was found ineffective for the elimination of target bacteria (10 6 -10 7 CFU/g) in meat pieces with weight ≥90 g. Salmonella enterica was able to survive in simulated gastric fluid. The storage temperature and microwaving were found critical point for the transfer of pathogens through ready-to-eat poultry meat products to consumer in chill ready-to-eat poultry meat chain.

show abstract

International Spread of Multidrug-resistantSalmonellaSchwarzengrund in Food Products

Abstract: This serovar was isolated from persons, food, and food animals in Thailand, Denmark, and the United States.

Cited by 126 publications

References 34 publications

Molecular Characterization of Antibiotic-Resistant Bacteria in Contaminated Chicken Meat Sold at Supermarkets in Bangkok, Thailand

Molecular Characterization of Antibiotic-Resistant Bacteria in Contaminated Chicken Meat Sold at Supermarkets in Bangkok, Thailand

Salmonella isolates’ serotypes and susceptibility to commonly used drugs at a tertiary care hospital in Riyadh, Saudi Arabia

Isolation of Salmonella from ready-to-eat poultry meat and evaluation of its survival at low temperature, microwaving and simulated gastric fluids

Contact Info

Product

Resources

About