Prevalence and antimicrobial resistance of Salmonella in retail foods in northern China

He, Yan; Li, Lin; Alam, M.J.; Shinoda, Sumió; Miyoshi, Shin Ichi; Shi, Lei

doi:10.1016/j.ijfoodmicro.2010.07.034

Cited by 93 publications

(85 citation statements)

References 18 publications

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“…This finding is in accordance with studies from other countries [12,15]. The prevalence of Salmonella isolates resistant to nalidixic acid was lower than the one reported by Shrestha et al (2010) in Nepal [28].…”

Section: Discussionsupporting

confidence: 92%

“…Different prevalence rates of Salmonella spp. in food, especially poultry and poultry products, have been reported by different authors [12][13][14][15][16][17]. Salmonella contamination rates observed in our country are relatively high (22.92%) and confirm the widespread contamination of pork and chicken meat with Salmonella spp.…”

Section: Discussionsupporting

confidence: 85%

“…However, the resistance rate is higher than the one reported by Yan et al (2010) [15], Chao et al (2007) [33], and Thong and Modarressi (2011) [12]. Concerning food-borne Salmonella, the resistances of most concern are those against quinolones and cephalosporins, both of which are mentioned in the WHO list of critically important antibiotics for human medicine [5].…”

Section: Discussionmentioning

confidence: 99%

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First study of Salmonella in meat in Romania

Mihaiu

Lapusan

Tanasuica

et al. 2014

J Infect Dev Ctries

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Introduction: The increasing antimicrobial resistance of Salmonella isolates is of major public health concern, but information regarding these aspects is still lacking in Romania. This study focused on a detailed and accurate investigation concerning prevalence, serotypes, and antimicrobial resistance patterns of Salmonella strains, isolated from pork and chicken meat, collected from all regions of Romania in 2011. Methodology: The research was conducted on 650 samples of chicken and pork meat collected from production units and retail markets located in various regions of Romania. A total of 149 Salmonella isolates were recovered (22.92%), serotyped, confirmed by PCR, and further tested for antimicrobial susceptibility. Results: Thirteen Salmonella serovars were identified; predominant serovars included Infantis, Typhimurium, Derby and Colindale. Multiple resistance was found in 83.22% (n = 124) of the isolates. The isolates were frequently resistant to tetracycline (80.53%), streptomycin (81.21%), sulfamethoxazole (87.25%), nalidixic acid (65.10%), and ciprofloxacin (42.95%). Additionally, a markedly lower resistance rate was observed for ampicillin (20.81%), chloramphenicol (16.78%), and ceftazidime (11.41%). Among 137 resistant Salmonella isolates, 35 different resistance patterns were found. Conclusion: A high prevalence of Salmonella spp. and a relatively high resistance rate to multiple antimicrobials was found. This data indicates that chicken and pork meat could constitute a source of human exposure to multidrug-resistant Salmonella and therefore could be considered a potential vehicle of resistant Salmonella foodborne diseases. Further actions are needed to succesfully implement a national surveillance program for better monitoring of these resistant pathogens.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

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First study of Salmonella in meat in Romania

Mihaiu

Lapusan

Tanasuica

et al. 2014

J Infect Dev Ctries

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“…In agreement with our results, the highest level of resistance to tetracycline has been reported in Portugal (70%; 17), Italy (56%; 18) and Brazil (70.7%; 13) for Salmonella strains isolated from different products and levels of the pre-and post-harvest pig meat chain. Also, high resistance frequency was obtained in various studies for ampicillin [7,17,19] and sulfonamides compounds [13,[17][18][19]. Moreover, marked resistance of pig meat origin Salmonella isolates towards ampicillin (56.2%), sulfonamides (54.5%), and tetracyclines (52.8%) was published by the European Food Safety Authority (EFSA) in its most recent summary report [20].…”

Section: Discussionmentioning

confidence: 99%

Occurrence and antimicrobial susceptibility of Salmonella isolates recovered from the pig slaughter process in Romania

Morar

Sala

Imre

2015

J Infect Dev Ctries

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Introduction: Reported human salmonellosis cases have increased in Romania. Antibiotic susceptibility testing of Salmonella strains isolated from pork and chicken meat indicate a worrying multidrug resistance pattern. This study aimed to investigate the occurrence of Salmonella and to evaluate the antibiotic resistance of Salmonella strains in a pig slaughterhouse-processing complex, which receives animals from 30% of the large industrialized swine farms in Romania. Methodology: A total of 108 samples, including pork (n = 47), packaged pork products (n = 44), scald water sludge (n = 8), and detritus from the hair removal machine of the slaughterhouse (n = 9) were examined for the presence of Salmonella through standard methods. The antibiotic susceptibility of the isolated strains to 17 antibiotics was tested using the Vitek 2 system. Results: Twenty-six (24.1%) samples were found to be Salmonella positive; this included 25.5% of meat samples and 15.9% of packaged products, as well as samples from two different points of the slaughter (41.2%). Resistance was observed against tetracycline (61.5%), ampicillin (50%), piperacillin (50%), trimethoprim-sulfamethoxazole (34.6%), amoxicillin/clavulanic acid (26.9%), nitrofurantion (23.1%), cefazolin (15.4%), piperacillin/tazobactam (7.7%), imipenem (3.8%), ciprofloxacin (3.8%), and norfloxacin (3.8%). No resistance towards cefoxitin, cefotaxime, ceftazidime, cefepime, amikacin, and gentamicin was found. Conclusions: Our study demonstrated the occurrence of multidrug-resistant Salmonella strains in the investigated pork production complex and highlighted it as a potential source of human infections. The results demonstrate the seriousness of antibiotic resistance of Salmonella in Romania, while providing a useful insight for the treatment of human salmonellosis by specialists.

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“…Salmonella serovars isolated from animals or foods in China also exhibited high resistance to the same antimicrobials (Chen et al, 2004;Yan et al, 2010;Yang et al, 2010;Lu et al, 2011). The decrease in resistant rates of some antimicrobials between 2000 and 2010 might be due to a ban or reducing use of specific antimicrobials from the Ministry of Agriculture of the People's Republic of China (MAPRC, 2002a, b).…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial resistance, presence of integrons and biofilm formation ofSalmonellaPullorum isolates from eastern China (1962–2010)

Gong

Zhu

et al. 2013

Avian Pathology

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Three hundred and thirty-seven isolates of Salmonella Pullorum from eastern China between 1962 and 2010 were characterized for antimicrobial susceptibility (disk diffusion method), the presence of integrons (polymerase chain reaction followed by sequencing) and the ability to form biofilms (semi-quantitative adherence assay). Two hundred and fifty-eight isolates (76.6%) exhibited multiple drug resistance (MDR; resistant to at least three different classes of antimicrobials), and the level of drug resistance is increasing with time. There were three isolates (9.4%) exhibiting MDR from 1962 to 1968. MDR rates began to increase for isolates between 1970 to 1979 and 1980 to 1987 (64.6 to 78.7%). The MDR rates reached 96.6% for isolates between 1990 and 2010. Polymerase chain reaction screening for integrons showed that 75 isolates (22.3%) were positive for class 1 integrons while none were positive for class 2 integrons. All of the class 1 integron-positive isolates exhibited MDR and were more frequently resistant than the negative isolates. Two hundred and twenty isolates (65.3%) had the ability to form biofilms, and bacterial resistance levels to cefamandole, trimethoprim and trimethoprim/sulfamethoxazole were significantly higher for biofilm-positive groups than the biofilm-negative groups. Our data show that multidrug resistance is common among S. Pullorum isolated from eastern China, being more frequent after 1990 than before 1990, and the presence of class 1 integrons is associated with multidrug resistance.

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Prevalence and antimicrobial resistance of Salmonella in retail foods in northern China

Cited by 93 publications

References 18 publications

First study of Salmonella in meat in Romania

First study of Salmonella in meat in Romania

Occurrence and antimicrobial susceptibility of Salmonella isolates recovered from the pig slaughter process in Romania

Antimicrobial resistance, presence of integrons and biofilm formation ofSalmonellaPullorum isolates from eastern China (1962–2010)

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