Antimicrobial resistance and genetic diversity of <i>Salmonella enterica</i> from eggs

Xie, Tengfei; Wu, Gang; He, Xujun; Lai, Zengzhe; Zhang, Huatong; Zhao, Jing

doi:10.1002/fsn3.1126

Cited by 16 publications

(22 citation statements)

References 29 publications

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“…In the present study, the overall prevalence of Salmonella was 7.78%, which were similar or in agreement with reports by Samanta et al [17]; Islam et al [18] and Xie et al [19]. Samata et al [17] identified 10% of Salmonella from backyard poultry eggs in West Bengal, India.…”

Section: Discussionsupporting

confidence: 92%

“…In the current study, antibiotic sensitivity and resistance patterns of Salmonella to different antimicrobials are in harmony with previous reports by Islam et al [18]; Ugwu et al [26] and Xie et al [19]. Islam…”

Section: Discussionsupporting

confidence: 92%

“…Islam et al [18] observed the Salmonella prevalence in eggs as 20.71% in Dhaka city, Bangladesh. Xie et al [19] reported that 5.40% of Salmonella isolated from eggs in Guangdong, China. Previous workers, who found 2.98% [20] and 3.5% [21] Salmonella prevalence in Ethiopia and Paraguay, reported lower Salmonella isolation rates.…”

Section: Discussionmentioning

confidence: 99%

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Prevalence and Antibiotic Susceptibility of Salmonella from Chicken Eggs in Naogaon District of Bangladesh

Hossain

Sarker

et al. 2019

JAMB

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Salmonella is one of the most common zoonotic bacteria that cause foodborne illness in humans. An investigation was conducted to determine the prevalence and antibiotic susceptibility patterns of Salmonella isolates from chicken eggs in the Naogaon district, Bangladesh. Salmonella was isolated from cultures on different selective-differential media and further identified by biochemical tests. Antibiogram study was done by the disk diffusion method. The overall prevalence of Salmonella was recorded as 7.78%, whereas 5.56% was on eggshell surfaces and 2.22% was in egg contents. The Salmonella prevalence was 8.33%, 13.33% and 1.67% in chicken eggs from layer farms, whole sellers and retailers, respectively. Salmonella isolates were found 50.0% to 85.71% sensitive to chloramphenicol, gentamycin, ciprofloxacin, and ceftriaxone. Resistance against gentamycin, chloramphenicol, and ampicillin was found significant ranging from 21.43% to 71.42%. The highest resistance was found in amoxicillin (92.86%). The present study proposes that chicken eggs are a potential reservoir of multidrug-resistant Salmonella. Antibiotic-resistant Salmonella will pose a problem to treat Salmonella infection in humans. Thus, the aim of this study is to assess the risk of Salmonella resistance in chicken eggs.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 92%

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Prevalence and Antibiotic Susceptibility of Salmonella from Chicken Eggs in Naogaon District of Bangladesh

Hossain

Sarker

et al. 2019

JAMB

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“…Generally, our results were consistent with the results of previous studies reporting that S. Typhimurium was the most prevalent serotype in eggs obtained from Penang in Malaysia and 50 poultry farms throughout Korea ( Adzitey et al, 2012 ; Bae et al, 2013 ). Additionally, S. Indiana, S. Typhimurium, and S. Enteritidis were found to be the predominant Salmonella serovars in eggs sampled in Yangzhou, China ( Li et al, 2017 ), while S. Enteritidis was the most prevalent serotype in eggs collected from Shandong, Shanghai, and Guangdong in China ( Ni et al, 2018 ; Xie et al, 2019 ; Yang et al, 2019 ). Particularly, S. Enteritidis has always been a common foodborne pathogen associated with salmonellosis caused by consumption of contaminated eggs or egg products, and this is mainly due to its specific survival mechanism in egg white with the assistance of the outer membrane channel TolC ( Huang et al, 2019 ; Raspoet et al, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

“…Many studies have characterized Salmonella in poultry and poultry-associated foods globally, especially eggs ( Moffatt et al, 2017 ; Kouam et al, 2018 ; Li et al, 2018 ; FDA, 2019a , b , c ; Karimiazar et al, 2019 ; Kingsbury et al, 2019 ; Sanchez-Salazar et al, 2019 ). Evidence suggests that the genetic diversity of Salmonella isolated from various sources is abundant, whereas the isolates from the same poultry farms are closely related ( Xie et al, 2019 ). Moreover, the occurrence and characteristics of Salmonella in poultry products including eggs always show dynamic variation during production, storage, and handling ( Li et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Prevalence, Serotype, Antibiotic Susceptibility, and Genotype of Salmonella in Eggs From Poultry Farms and Marketplaces in Yangling, Shaanxi Province, China

Zheng

et al. 2020

Front. Microbiol.

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Poultry products such as eggs provide essential nutrients to the human body and thus play vital roles in the human food network. Salmonella is one of the most notorious foodborne pathogens and has been found to be prevalent in eggs. To better understand the characteristics of Salmonella in eggs, we investigated the prevalence of Salmonella spp. in 814 fresh eggs collected from poultry farms and retail marketplaces in Yangling, Shaanxi Province, China. The serotype, genotype, and antibiotic susceptibilities of 61 Salmonella isolates recovered from the eggs were analyzed. The average detection rate of Salmonella -positive eggs was 5.6%, with 6.6% of the eggs collected from poultry farms and 5.1% from marketplaces. Thirteen serotypes were identified from the 61 isolates, among which Salmonella Typhimurium (24.5%) and Salmonella Indiana (22.9%) were the most prevalent serotypes. Other dominant serotypes included Salmonella Thompson (13.1%) and Salmonella Enteritidis (11.4%), with the remaining nine serotypes detected at low rates (1.6–4.9%). All the Salmonella isolates tested were resistant to sulfisoxazole (100.0%). The majority (77.1%) of the isolates were resistant to nalidixic acid, amoxicillin-clavulanate, and ampicillin, while nearly two-thirds (63.9–68.9%) were resistant to trimethoprim–sulfamethoxazole, kanamycin, tetracyclines, and chloramphenicol. The rate of resistance to ciprofloxacin was 40.1%; the resistance rates to streptomycin, ceftiofur, and ceftriaxone ranged from 21.3 to 26.2%; and those to gentamicin, amikacin, and cefoxitin were relatively low (3.3–16.4%). Forty-nine (80.3%) Salmonella isolates exhibited resistance to multiple antibiotics, 20 (32.8%) of which were resistant to at least 10 antibiotics. Subtyping by pulse-field gel electrophoresis revealed a close genetic relatedness of Salmonella isolates from poultry farms, in striking contrast to the high diversity of the isolates obtained from marketplaces. Isolates of the same serotype always shared identical genotype and antibiotic resistance profiles, even the ones that were recovered from eggs sampled at different locations and times. These findings indicate that diverse Salmonella spp. with high rates of multidrug resistance are prevalent in fresh eggs in the study area. More attention should be paid to egg production, transportation, and storage to prevent foodborne outbreaks caused by Salmonella .

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Prevalence and antimicrobial susceptibility of Salmonella enteritidis and Salmonella typhimurium isolated from hen eggs and quail eggs in Karaj, Iran

Yousefi Amin,

Oshaghi,

Habibi

et al. 2024

Veterinary Medicine & Sci

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Background and aimDifferent Salmonella serotypes are considered one of the most important food pathogens in the world. Poultry meat and eggs are the primary carriers of Salmonella in human populations. This study aimed to estimate the Salmonella enteritidis and Salmonella typhimurium contamination rates of retail hen and quail eggs in Karaj, Iran. Moreover, the antimicrobial resistance patterns of the strains were evaluated, and the efficiency of the standard culture method and multiplex polymerase chain reaction (m‐PCR) were compared.Materials and methodsIn this descriptive cross‐sectional study over 1 year (Jan–Dec 2022), 150 commercial and 150 backyard hen eggs and 300 commercial quail eggs, without cracks and fractures, were collected randomly from best selling groceries in Karaj city. All samples were examined for Salmonella contamination independently by standard culture and m‐PCR approaches. A standard disc diffusion method was employed to assess the antimicrobial susceptibility of the strains against 18 antimicrobial agents.ResultsOut of 300 examined eggs, 2 S. enteritidis strains were isolated from the shell of backyard hen eggs. The same serotype was also detected in the contents of one of these two eggs. One S. typhimurium was isolated from the shell of a commercial hen egg. Overall, the Salmonella contamination of the shell and contents was 1% and 0.3%, respectively. Salmonella was not isolated from the eggshells or the contents of the quail eggs. There was complete agreement between the results of m‐PCR and the standard culture methods. Among the 18 tested antibiotics, the highest resistance was recorded for colistin (100%), followed by nalidixic acid (75%).ConclusionAs most Salmonella spp. are associated with human food poisoning, continuous surveillance is required to effectively reduce the risk posed by contaminated poultry eggs. Furthermore, mandatory monitoring of antimicrobial use on Iranian poultry farms is recommended.

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Antimicrobial resistance and genetic diversity of Salmonella enterica from eggs

Cited by 16 publications

References 29 publications

Prevalence and Antibiotic Susceptibility of Salmonella from Chicken Eggs in Naogaon District of Bangladesh

Prevalence and Antibiotic Susceptibility of Salmonella from Chicken Eggs in Naogaon District of Bangladesh

Prevalence, Serotype, Antibiotic Susceptibility, and Genotype of Salmonella in Eggs From Poultry Farms and Marketplaces in Yangling, Shaanxi Province, China

Prevalence and antimicrobial susceptibility of Salmonella enteritidis and Salmonella typhimurium isolated from hen eggs and quail eggs in Karaj, Iran

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