Prevalence and Risk Factor Investigation of Campylobacter Species in Retail Ground Beef from Alberta, Canada.
Bibliographic record
Abstract
Campylobacteriosis is the most commonly reported (notifiable) bacterial enteric disease in Alberta, Canada. The purpose of this study was to assess the prevalence of Campylobacter species in retail ground beef based on a survey of 60 stores (four supermarket chains, three cities) in southern Alberta. None of the 1,200 retail lean and regular ground beef packages were culture positive. Direct PCR results from a subset of samples (n = 142) indicated that 46% of packages tested were positive for Campylobacter DNA. By species, 14.8% (21/142), 26.8% (38/142) and 1.4% (2/142) of packages were PCR positive for C. jejuni, C. coli and C. hyointestinalis DNA, respectively. The presence of campylobacters varied depending on the dates of collection. However, type of package (regular or lean), whether the store cut/packaged poultry in the meat department, type of meat used as the beef source (market trim, coarse grind tubes or a combination of these), whether meat portions were previously frozen, and package weight were not associated with the odds of finding Campylobacter spp. DNA by use of PCR. The high levels of Campylobacter DNA in the beef suggest that breaks in food safety protocols within slaughter plants, processors or grocery stores could have potentially important public health repercussions.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".