Quantitative risk assessment of human listeriosis from consumption of soft cheese made from raw milk

Bemrah, Nawel; Sanaa, Moez; Cassin, Michael H.; Griffiths, Mansel W.; Cerf, O.

doi:10.1016/s0167-5877(98)00112-3

Cited by 141 publications

(93 citation statements)

References 20 publications

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“…On the other hand, Aygun and Pehlivanlar [21] found one (2.12%) positive sample for L. ivanovii and L. grayi among 47 raw milk samples. Faecal or environmental contamination during milking, storage and transport, infected cows in dairy farms and poor silage quality have been reported [7,14,17,[19][20][21] as contamination sources of Listeria spp. to raw milk.…”

Section: Discussionmentioning

confidence: 99%

Türkiye’nin Güneydoğu Bölgesi’nde Üretilen Mısır Silajı ve Çiğ Sütlerde Listeria Türlerinin Varlığı

Durmaz¹,

Avcı²,

Aygün³

2015

Kafkas Univ Vet Fak Derg

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The objective of this study was to investigate the presence of Listeria species in the corn silage and raw milk samples. A total of 140 raw milk samples obtained from cows, sheeps and goats fed with silage and 90 corn silage samples collected from 10 dairy farms in SouthEastern Region of Turkey were analyzed for Listeria spp. In the result, L. monocytogenes and L. innocua were isolated from 2 (2.2%) and 5 (5.5%) silage samples and from 3 (2.1%) and 5 (3.5%) raw milk samples, respectively. The results indicates that these are a potential risk for animals and public health. Prevention of growth of L. monocytogenes in silage will also contribute to reduction of Listeria spp. in milk. Keywords

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Section: Discussionmentioning

confidence: 99%

Türkiye’nin Güneydoğu Bölgesi’nde Üretilen Mısır Silajı ve Çiğ Sütlerde Listeria Türlerinin Varlığı

Durmaz¹,

Avcı²,

Aygün³

2015

Kafkas Univ Vet Fak Derg

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“…L. monocytogenes has been linked with numerous outbreaks associated with milk and milk products [39][40][41]. This pathogen may have contaminated the milk samples through inadequate sanitation during milking, storage and transport or from infected cows on the farms [42]. Thus, proper animal monitoring and handling techniques for milk should be applied on Lebanese farms.…”

Section: Microbiological Analysis Of Milk Samplesmentioning

confidence: 99%

Quantification of Antibiotic Residues and Determination of Antimicrobial Resistance Profiles of Microorganisms Isolated from Bovine Milk in Lebanon

Zeina¹,

Pamela²,

Fawwak³

2013

FNS

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The rapid growth of dairy sectors in the Middle East, particularly in Lebanon, led to extensive use of antibiotics to enhance the health and productivity of animals. Prolonged usage may lead to antibiotic residues in foods of animal origin; hence, the emergence of antimicrobial resistant microorganisms. Accurate data on the antibiotic usage in livestock treatment, antibiotic residues and antimicrobial resistances in raw milk in Lebanon are lacking. This study aimed to investigate the types and usages of antibiotics in cattle, their residual levels and the potential microbial resistances in raw milk samples. A questionnaire-based survey identified Gentamicin and Streptomycin as the most frequently used antibiotics. Selected raw milk samples from main dairy farms were then analyzed in duplicate by quantitative ELISA for the antibiotics residual levels. The mean residual levels of Gentamicin and Streptomycin were 90 and 80 μg/L, respectively; which are below the allowable maximum residue limit of 200 μg/L as set by the FAO/WHO. Staphylococcus aureus, Listeria monocytogenes, E. coli and total aerobic microorganisms isolated from the milk samples were then tested for resistance against Gentamicin and Streptomycin by the disc agar diffusion method. All the S. aureus, E. coli, and L. monocytogenes isolates showed high resistance to Gentamicin. However, 95% of S. aureus, 60% of E. coli and 58% of L. monocytogenes isolates were resistant to Streptomycin. The obtained results provide evidence that antimicrobial resistant strains of the above pathogens have become remarkably widespread in raw milk. This requires better management for antibiotic usages among livestock farmers to control sources of food contamination and reduce the health risks associated with the development of resistant microbial strains.

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“…Several mathematical models have been developed in the last few decades to describe and predict the growth of microorganism populations according to environmental factors (Ratkowsky et al, 1982;Rosso et al, 1995;van Gerwen and Zwietering, 1998). These models should then be included in microbial food safety risk assessment, either in a simplified form (Peeler and Bunning, 1994;Farber et al, 1996;Bemrah et al, 1998) or in their full form (Delignette-Muller and Rosso, 2000), as long as good estimates are available for all their parameters.…”

Section: Introductionmentioning

confidence: 99%

Estimation of uncertainty and variability in bacterial growth using Bayesian inference. Application to Listeria monocytogenes

Pouillot

Albert

Cornu

et al. 2003

International Journal of Food Microbiology

109

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The usefulness of risk assessment is limited by its ability or inability to model and evaluate risk uncertainty and variability separately. A key factor of variability and uncertainty in microbial risk assessment could be growth variability between strains and growth model parameter uncertainty. In this paper, we propose a Bayesian procedure for growth parameter estimation which makes it possible to separate these two components by means of hyperparameters. This model incorporates in a single step the logistic equation with delay as a primary growth model and the cardinal temperature equation as a secondary growth model. The estimation of Listeria monocytogenes growth parameters in milk using literature data is proposed as a detailed application. While this model should be applied on genuine data, it is highlighted that the proposed approach may be convenient for estimating the variability and uncertainty of growth parameters separately, using a complete predictive microbiology model. D

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Quantitative risk assessment of human listeriosis from consumption of soft cheese made from raw milk

Cited by 141 publications

References 20 publications

Türkiye’nin Güneydoğu Bölgesi’nde Üretilen Mısır Silajı ve Çiğ Sütlerde Listeria Türlerinin Varlığı

Türkiye’nin Güneydoğu Bölgesi’nde Üretilen Mısır Silajı ve Çiğ Sütlerde Listeria Türlerinin Varlığı

Quantification of Antibiotic Residues and Determination of Antimicrobial Resistance Profiles of Microorganisms Isolated from Bovine Milk in Lebanon

Estimation of uncertainty and variability in bacterial growth using Bayesian inference. Application to Listeria monocytogenes

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