“Beware Manʼs Best Friend”
Bibliographic record
Abstract
In Brief Study Design. Case report. Objective. To illustrate the usefulness of broad-range bacterial polymerase-chain-reaction (PCR) testing in osteoarticular infections by Capnocytophaga canimorsus. Summary of Background Data. C. canimorsus is a Gram-negative bacillus that was first identified in 1976. It is a normal inhabitant of the oral mucosa of dogs (26%) and cats (15%). The main clinical patterns are septicemia, which may cause fatal septic shock (in 30% of cases) but arthritis and discitis are possible. C. canimorsus is susceptible to many antimicrobials including β-lactam antibiotics. Methods. About a case report of 54-year-old man transferred to our institution for discitis, we discuss about PCR for C. canimorsus discitis diagnosis. Results. At admission, the only abnormal physical finding was global pain and stiffness of the lumbar spine. Radiographs of the lumbar spine and pelvis showed lumbar spondylosis, degenerative disc disease, and previously known degenerative facet joint disease. Magnetic resonance imaging indicated L3–L4 discitis with damage to both vertebrae and adjacent discs. Findings were negative from blood and urine cultures, serological tests for the HIV and brucellosis, and sputum tests for Mycobacterium tuberculosis. A percutaneous biopsy of the L3–L4 disc was performed but the bacteriological studies recovered no organisms. A second needle biopsy was performed for broad-range 16S rDNA PCR testing, which identified C. canimorsus. Conclusion. Broad-range PCR provided the microbiological diagnosis of culture-negative discitis in our patient. Broad-range PCR should be considered in patients with culture-negative osteoarticular infections. We report a case of discitis due to Capnocytophaga canimorsus identified using broad-range 16S rDNA polymerase-chain-reaction testing in osteoarticular infections. Broad-range polymerase chain reaction provided the microbiological diagnosis of culture-negative discitis in our patient. Broad-range polymerase chain reaction should be considered in patients with culture-negative osteoarticular infections.
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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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.005 |
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; both teacher heads agree on what is shown here.
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".