Antibiotic resistance profiles of Salmonella serovars isolated from retail pork and chicken meat in North Vietnam

Thai, Truong Ha; Hirai, Takuya; Lan, Nguyen Thi; Yamaguchi, Ryoji

doi:10.1016/j.ijfoodmicro.2012.03.016

Cited by 125 publications

(119 citation statements)

References 29 publications

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“…All isolates showed a relatively high degree of sensitivity to ciprofloxacin (92%) and ceftriaxone (95%), (commonly used fluoroquinolones and cephalosporins antibiotics), which may reflect restricted use of them in avian. This finding is in accordance with those reported from Vietnam (17,18) and is in contrast to report from Turkey (19).…”

Section: Discussionsupporting

confidence: 92%

Antibiotic Resistance Pattern and Biofilm Formation Ability of Clinically Isolates of Salmonella enterica Serotype typhimurium

Ghasemmahdi¹,

Tajik²,

Moradi³

et al. 2015

Int J Enteric Pathog

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Background:The emergence of antimicrobial-resistant bacteria with biofilm formation ability may be a major threat to public health and food safety and sanitation. Objectives: The aim of this study was to determine antibiotic resistance patterns and biofilm production characteristics of Salmonella typhimurium isolated from different species of birds. Materials and Methods:The antibiotic resistance patterns of 38 pre-identified isolates were screened by standard Kirby-Bauer discdiffusion method performed on Mueller-Hinton agar to a panel of 17 antibiotics. The extent of biofilm formation was measured by Microtiter plate (MTP)-based systems. Results: The highest antimicrobial resistance was detected against nalidixic acid (97%), followed by doxycycline (86%), colistin (84%), streptomycin (84%) and tetracycline (84%). All isolates were sensitive to amikacin (100%) and 97% and 95% of the isolates were sensitive to ceftazidime and ceftriaxone, respectively. Twenty one different antibiotic resistance patterns were observed among S. typhimurium isolates. According to the results of the microtitre plate biofilm assay, there was a wide variation in biofilm forming ability among S. typhimurium isolates. Most of the isolates (60.52%) were not capable of producing biofilm, while 26.31%, 7.89%, and 5.26% isolates were weak, strong and moderate biofilm producers, respectively. Conclusions: It was concluded that nearly all S. typhimurium isolates revealed a high multiple antibiotic resistant with low biofilm forming capabilities which proposed low association between biofilm formation and antibiotic resistance of a major food important pathogen.

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Section: Discussionsupporting

confidence: 92%

Antibiotic Resistance Pattern and Biofilm Formation Ability of Clinically Isolates of Salmonella enterica Serotype typhimurium

Ghasemmahdi¹,

Tajik²,

Moradi³

et al. 2015

Int J Enteric Pathog

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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%

“…The results of several Salmonella surveys, carried out in pig slaughtering and processing plants, have shown that fresh pig meat and pork products thereof can be considered an important vehicle for the transmission of Salmonella to humans [3][4][5][6]. The application of misused and prolonged antibiotic treatments in farm animals with therapeutic and prophylactic purposes can lead to the development of antimicrobial-resistant commensals and/or zoonotic foodborne bacterial pathogens, including Salmonella [7]. This undesired consequence is frequently associated with the transmission of resistant bacteria populations to humans, which may pose significant therapeutic challenges for clinicians treating diseases.…”

Section: Introductionmentioning

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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“…It is more often associated with foodborne Salmonellosis (Akbar and Anal 2013;Fernandez et al 2012;Hur et al 2011), and human gastroenteritis (Skov et al 2007). Consumption of animal food products are thought to be the major cause of the Salmonella outbreaks (Thai et al 2012). Salmonella were found responsible for 1,722 outbreaks of foodborne infections in the European countries in 2009 (Fernandez et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Infections with drug resistant Salmonella are more fatal and take longer time for recovery as compare to drug susceptible Salmonella species (Skov et al 2007). Excessive and misuse of antibiotics in animals and human is the leading cause of drug resistance development in pathogens (Thai et al 2012). Food contaminated with drug resistant bacteria is a major threat to public health as the antibiotic resistance can transfer to other bacteria (Akbar and Anal 2011).…”

Section: Introductionmentioning

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

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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.

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Antibiotic resistance profiles of Salmonella serovars isolated from retail pork and chicken meat in North Vietnam

Cited by 125 publications

References 29 publications

Antibiotic Resistance Pattern and Biofilm Formation Ability of Clinically Isolates of Salmonella enterica Serotype typhimurium

Antibiotic Resistance Pattern and Biofilm Formation Ability of Clinically Isolates of Salmonella enterica Serotype typhimurium

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

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

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