Michael L. Hutchison

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Current European Union legislation prohibits the washing of Class A eggs. This is in stark contrast to countries such as the United States of America and, more recently Japan, which have embraced egg-washing technology. The emergence in the UK of egg associated Salmonella enteritidis as a significant cause of food poisoning has, combined with the increase(More)
Bovine sides, ovine carcasses, and porcine carcasses were individually inoculated by dipping in various suspensions of a marker organism (Escherichia coli K-12 or Pseudomonas fluorescens), alone or in combination with two meat-derived bacterial strains, and were sampled by two standard methods: cotton wet-dry swabbing and excision. The samples were examined(More)
A comparison of wet-dry swabbing and surface tissue excision of carcasses by coring was undertaken. Samples from 1,352 bovine, 188 ovine, and 176 porcine carcasses were collected from 70 separate visits to commercial slaughterhouses operating under normal conditions. The mean total aerobic viable bacterial counts (TVCs) for all species sampled by excision(More)
The aims of this study were (i) to determine the prevalence and numbers of campylobacters in 63 samples of raw livers purchased at retail across the UK and (ii) to investigate whether the freezing of chicken livers contaminated with Campylobacter was a reliable method for decontamination. Chicken livers naturally contaminated with campylobacters were(More)
AIMS To identify production and processing practices that might reduce Campylobacter numbers contaminating chicken broiler carcasses. METHODS AND RESULTS The numbers of campylobacters were determined on carcass neck skins after processing or in broiler house litter samples. Supplementary information that described farm layouts, farming conditions for(More)
Statutory microbiological test results were collected from British meat plants over a 4-year period from June 2002 to May 2006. A total of 49,074 carcass test results from 19,409 cattle, 14,706 sheep, and 14,959 pig swabs and 95,179 environmental test results from surface swabs were obtained. These test results were donated by 94 slaughterhouses, which(More)
This study was conducted to analyse the current practices used by the Scottish smoked salmon industry that will affect the likelihood of Listeria monocytogenes contamination in products. Sixteen visits to smoked salmon premises were conducted between June and November 2011, interviews were carried out based on a questionnaire. The results indicate that most(More)
UNLABELLED A study was undertaken to simulate the likely effects of a field worker with poor hygienic practices that had returned to work too soon after recovering from an infection by an enteric pathogen. The studies simulated a variety of hand-washing practices from no washing to washing with soap and water followed by an application of alcohol gel after(More)
AIMS To improve our understanding of the survival and splash-mediated transfer of zoonotic agents and faecal indicator bacteria introduced into soils used for crop cultivation via contaminated irrigation waters. METHODS AND RESULTS Zoonotic agents and an Escherichia coli marker bacterium were inoculated into borehole water, which was applied to two(More)
Preliminary results on the microbiological implications of using a small-scale bucket-style washer are reported for chicken eggs. The bucket washer reduced the total bacterial numbers on the surface of cage-produced eggs under manufacturer-recommended conditions on average by 1.5 log CFU egg. When washing free range eggs which were visibly soiled, there was(More)