Prevalence and risk factors for Salmonella spp. contamination of slaughtered chickens in Taiwan

Lin, Chih-Hsien; Adams, Peter J.; Huang, Jingfang; Sun, Yu-Fen; Lin, Jiunn-Horng; Robertson, Ian D.

doi:10.1016/j.prevetmed.2021.105476

Cited by 4 publications

(4 citation statements)

References 27 publications

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“…In the current investigation, the prevalence rates of Salmonella in pork and chicken samples were 51.3% and 35.2%, respectively, which were consistent with previous studies conducted in Taiwan [9,19,20]. The Salmonella strains obtained from pork carcasses in Taiwan were previously relatively resistant to the antimicrobial treatments tested [21][22][23].…”

Section: Discussionsupporting

confidence: 90%

Prevalence, Serotypes, and Antimicrobial Resistance Patterns of Non-Typhoid Salmonella in Food in Northern Taiwan

et al. 2022

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Salmonella is one of the most common bacteria causing food poisoning worldwide. We evaluated the prevalence, the serotypes, and the antimicrobial resistance (AMR) of Salmonella isolates from many kinds of food, particularly pork and chicken in retail, in Taiwan between January 2017 and December 2019. The E-test was used to assess antimicrobial susceptibility and a polymerase chain reaction was performed for serotyping. A total of 459 different foods were investigated, and 117 Salmonella strains were isolated. Retail pork and chicken were the most common Salmonella-contaminated foods (64.1% and 29.1%, respectively). Of the 117 isolates, 23 serotypes were identified. The serotypes Derby (16.2%), Anatum (13.7%), and Agona (8.5%) were the most prevalent. The resistance rates to ciprofloxacin, ceftriaxone, and carbapenem were 41.9%, 11.1%, and 1.7%, respectively. The Derby and Anatum serotypes were prevalent in chicken and pork; the Anatum serotype had significantly higher ciprofloxacin and ceftriaxone resistance rates and was highly prevalent in 2017 and 2018. Multi-locus sequence typing analysis revealed that the 58 randomly chosen Salmonella isolates belonged to 18 sequence types (STs). ST64 (Anatum, 16 out of 58, 27.6%) was the most common, followed by ST321 (Muenster, 6/58, 10.3%), ST831 (Give, 5/58, 8.6%), ST155 (London, 4/58, 6.9%) and ST314 (Kentucky, 4/58, 6.9%). Multidrug-resistant Salmonella strains were remarkably observed in the serotypes Anatum (ST64) and Goldcoast (ST358). This study revealed that retail pork was commonly contaminated with antimicrobial-resistant Salmonella. Thus, periodic investigations of Salmonella serotypes and AMR are needed.

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Section: Discussionsupporting

confidence: 90%

Prevalence, Serotypes, and Antimicrobial Resistance Patterns of Non-Typhoid Salmonella in Food in Northern Taiwan

et al. 2022

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“…(2021) found that the overall prevalence of S. enterica isolated from chicken meat was 36.2% in Thailand. Salmonella was detected in 32.6% of individual broilers in Taiwan (Lin et al ., 2021). Mahdavi et al .…”

Section: Discussionmentioning

confidence: 99%

Comprehensive analysis of Salmonella in poultry meat and products in Türkiye: Prevalence, antibiotic susceptibility and genomic characterisation

Dishan,

Hizlisoy,

Onmaz

et al. 2024

Int J of Food Sci Tech

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SummaryThe study aimed to determine the prevalence and characteristics of Salmonella isolated from raw chicken meat and products. For this purpose, a total of 293 samples were collected, including chicken breast (n = 90), skinned drumstick (n = 80), skinned chicken chop (n = 42), wing (n = 32), chicken offal (n = 27) and chicken patty (n = 22). The samples were subjected to Salmonella enterica. detection and the obtained suspicious isolates were confirmed by conventional PCR. Their phenotypical antibiotic resistance profiles were subsequently determined. The prevalence of Salmonella Enteritidis and Typhimurium serovars among S. enterica isolates were investigated using TaqMan probe Real‐Time PCR (qPCR) analysis, and the detected serovars were evaluated with whole genome sequencing. In the study, 112 (38.22%) of the 293 chicken samples contained S. enterica, with five (4.46%) and one (0.89%) of the isolates identified as Salmonella Enteritidis and Typhimurium, respectively. Antibiotic resistance analysis revealed that all isolates were sensitive to Meropenem and Aztreonam, while the most resistant antibiotics were Doxycycline (96.42%) and Trimethoprim‐sulfamethoxazole (71.42%). Whole genome sequencing, specifically SNP‐based phylogenetic analyses, indicated that Salmonella Enteritidis and Typhimurium isolates were distinct clones. All Salmonella Enteritidis isolates shared the same antigenic profiles (9: g, m:‐) and cgMLST types of 11, while the Salmonella Typhimurium isolate had cgMLST type 19 and a 4:i:1,2 antigenic profile. It was observed that the phenotypic resistance profiles of the isolates were consistent with the whole genome characterisation. The data obtained in the study reveal the continued importance of Salmonella monitoring for the poultry industry across different regions of Türkiye to maintain food safety. Chicken meat and products are indispensable to public health in providing healthy nutrition and access to animal protein. The microbiological and epidemiological risks observed in mass production can be minimised, particularly by integrating epidemiological and molecular findings with an effective strategy.

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“…Fragmented evidence exists on the efficacy of existing Salmonella decontamination methods at specific processing points, from scalding through defeathering and washing to chilling. Extraneous variables such as weather and seasons, decontaminant application technique and the carcass parts exposed, sampling, and microbial confirmation technique during analysis have been implicated as confounding factors in the reported data on the effectiveness of Salmonella decontamination (Bucher et al ., 2012a, 2012b; Bourassa et al ., 2015; Lin et al ., 2021).…”

Section: Introductionmentioning

confidence: 99%

Systematic review and meta‐analysis of the impact of decontamination interventions on the prevalence and concentration of Salmonella in broiler chickens during primary processing

Gichure,

Coorey,

Njage

et al. 2023

Int J of Food Sci Tech

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SummarySystematic review and meta‐analysis aggregate quantitative data from different studies into unified effect size estimates with better statistical power in risk assessment model parameterization. This study uses systematic review and meta‐analysis to estimate Salmonella decontamination during broiler slaughter from scalding to post‐chilling, with meta‐regression applied to explore modifier variables. Data from 161 studies published between 1998 and 2022 was extracted from thirty‐five articles identified in the systematic review process with meta‐analysis and meta‐regression performed using the metafor package (version 2.0‐0) in R statistical environment (version 3.6.0). The analysis revealed carcass wash (1.31 log10 CFU/carcass reduction in odds; p <.01) and chilling (121.50% reduction in relative risk; p <.01) had significant reduction on Salmonella concentration and prevalence, respectively. Chemical additives reduced the concentration (0.98 log10 CFU/carcass; p <.01) and prevalence (64.74% relative risk; p <.01) but the efficacy of physical methods was not conclusive. Application of decontaminants through immersion was superior (0.90 log10 CFU/carcass; p <.01) to spraying (0.72 log10 CFU/carcass; p <.01). Adjusting the pH sequentially of electrolyzed water, acetic acid and trisodium phosphate reduced the odds of Salmonella concentration by more than 2 log cycles and the relative risk by more than 100%. The results provide trends in the concentration and prevalence of Salmonella during the broilers slaughter process with application of decontamination interventions and provide a basis for control decision‐making and quantitative microbial risk assessment.

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Prevalence and risk factors for Salmonella spp. contamination of slaughtered chickens in Taiwan

Cited by 4 publications

References 27 publications

Prevalence, Serotypes, and Antimicrobial Resistance Patterns of Non-Typhoid Salmonella in Food in Northern Taiwan

Prevalence, Serotypes, and Antimicrobial Resistance Patterns of Non-Typhoid Salmonella in Food in Northern Taiwan

Comprehensive analysis of Salmonella in poultry meat and products in Türkiye: Prevalence, antibiotic susceptibility and genomic characterisation

Systematic review and meta‐analysis of the impact of decontamination interventions on the prevalence and concentration of Salmonella in broiler chickens during primary processing

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