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Cheng H, Zhao G, Xu Y, Zhao J, Huang X, Zhang X, Liu N, Wang L, Liu J, Wang J. Quantitative Risk Assessment of Salmonella in Breaded Pork Products in China. Foodborne Pathog Dis 2024; 21:109-118. [PMID: 38011665 DOI: 10.1089/fpd.2023.0077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023] Open
Abstract
Pork products were the most common media of Salmonella in China, breaded pork products as a very popular meat presently, whose Salmonella risk should be drawn to attention. Given that quantitative risk assessment is a more scientific method for risk evaluation, a quantitative risk assessment model of Salmonella in breaded pork products was first constructed from processing to consumption, and was used for assessing the risk and the effective interventions in this study. The data of Salmonella contamination in breaded pork products during processing were obtained from the actual detection data of samples from a representative meat processing plant. With combining the predictive microbial modeling and dose-response relationship, the risk of Salmonella in breaded pork products was charactered, and the probability of Salmonella infection per meal was found to be 5.585 × 10-9. Based on the results of sensitivity analysis, the curing and seasoning process was found to be the key control point for Salmonella contamination during the processing, and consumer behavior was the key control point affecting the probability of Salmonella infection from processing to consumption. The model was also applied for assessing the effectiveness of risk interventions, and among the nine interventions given, control of thawing temperature before cooking such as microwave thawing could reduce the risk of infection by 30.969-fold, while cooking the products thoroughly, Salmonella would not pose a pathogenic hazard to consumers. The model and the assessed results in this study may provide guidance on microbial control in producing process and safety consumption of breaded pork products.
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Affiliation(s)
- Huimin Cheng
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
- Food Processing and Safety, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Ge Zhao
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
- Key Laboratory of Animal Biosafety Risk Prevention and Control (South), Ministry of Agriculture and Rural Affairs, Qingdao, China
| | - Ying Xu
- Food Processing and Safety, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Jianmei Zhao
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Xiumei Huang
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Xiyue Zhang
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Na Liu
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Lin Wang
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Junhui Liu
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
| | - Junwei Wang
- China Animal Health and Epidemiology Center, Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory (Qingdao) of MARA, Qingdao, China
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Nguyen TT, He C, Carter R, Ballard EL, Smith K, Groth R, Jaatinen E, Kidd TJ, Thomson RM, Tay G, Johnson GR, Bell SC, Knibbs LD. Quantifying the effectiveness of ultraviolet-C light at inactivating airborne Mycobacterium abscessus. J Hosp Infect 2023; 132:133-139. [PMID: 36309203 DOI: 10.1016/j.jhin.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/26/2022] [Accepted: 10/06/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Mycobacterium abscessus (MABS) group are environmental organisms that can cause infection in people with cystic fibrosis (CF) and other suppurative lung diseases. There is potential for person-to-person airborne transmission of MABS among people with CF attending the same care centre. Ultraviolet light (band C, UV-C) is used for Mycobacterium tuberculosis control indoors; however, no studies have assessed UV-C for airborne MABS. AIM To determine whether a range of UV-C doses increased the inactivation of airborne MABS, compared with no-UVC conditions. METHODS MABS was generated by a vibrating mesh nebulizer located within a 400 L rotating drum sampler, and then exposed to an array of 265 nm UV-C light-emitting diodes (LED). A six-stage Andersen Cascade Impactor was used to collect aerosols. Standard microbiological protocols were used for enumerating MABS, and these quantified the effectiveness of UV-C doses (in triplicate). UV-C effectiveness was estimated using the difference between inactivation with and without UV-C. FINDINGS Sixteen tests were performed, with UV-C doses ranging from 276 to 1104 μW s/cm2. Mean (±SD) UV-C effectiveness ranged from 47.1% (±13.4) to 83.6% (±3.3). UV-C led to significantly greater inactivation of MABS (all P-values ≤0.045) than natural decay at all doses assessed. Using an indoor model of the hospital environment, it was estimated that UV-C doses in the range studied here could be safely delivered in clinical settings where patients and staff are present. CONCLUSION This study provides empirical in-vitro evidence that nebulized MABS are susceptible to UV-C inactivation.
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Affiliation(s)
- T T Nguyen
- Faculty of Medicine, School of Public Health, University of Queensland, Brisbane, QLD, Australia.
| | - C He
- International Laboratory for Air Quality & Health, School of Earth and Atmospheric Sciences, Faculty of Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - R Carter
- Centre for Children's Health Research, Brisbane, QLD, Australia
| | - E L Ballard
- QIMR Berghofer Institute of Medical Research, Brisbane, QLD 4006, Australia
| | - K Smith
- Centre for Children's Health Research, Brisbane, QLD, Australia
| | - R Groth
- International Laboratory for Air Quality & Health, School of Earth and Atmospheric Sciences, Faculty of Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - E Jaatinen
- School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, QLD, Australia
| | - T J Kidd
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, QLD, Australia; Pathology Queensland, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - R M Thomson
- The Prince Charles Hospital, Brisbane, QLD, Australia; Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia; Gallipoli Medical Research Foundation, Greenslopes Private Hospital, Brisbane, QLD, Australia
| | - G Tay
- The Prince Charles Hospital, Brisbane, QLD, Australia
| | - G R Johnson
- International Laboratory for Air Quality & Health, School of Earth and Atmospheric Sciences, Faculty of Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - S C Bell
- Centre for Children's Health Research, Brisbane, QLD, Australia; The Prince Charles Hospital, Brisbane, QLD, Australia; Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia; Translational Research Institute, Brisbane, QLD, Australia
| | - L D Knibbs
- Public Health Unit, Sydney Local Health District, Camperdown, NSW, Australia; Faculty of Medicine and Health, School of Public Health, University of Sydney, NSW, Australia
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