Genotypic characterization of Salmonella Typhimurium isolates from humans, pigs and poultry in Canada
Bibliographic record
Abstract
A total of 101 isolates of Salmonella enterica serovar Typhimurium were characterized in this study to evaluate the risk for human health associated with the presence of Salmonella isolates in pigs and poultry. Fifteen isolates recovered from human clinical specimens were compared to animal isolates. Isolates were recovered during the same period and in the same geographical area and characterized by establishing their genotypic and phenotypic profiles. All strains were characterized by phage-typing, antimicrobia l resistance patterns to various antimicrobial agents and pulsed-field gel electrophoresis (PFGE) of genomic DNA using Xba I and Spe I. The most frequently isolated phage type was phage type 104 in human (20,0 %), PT 104 in pig (40,2 %) and S. Typhimurium variant copenhagen I 04 in poultry (50,0 %). Spe I gave the highest index of discrimination among S. Typhimurium as evidenced by the variety of PFGE patterns obtained. The typing of the isolates showed that some animal and human strains were genetically related.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".