Atypical exanthem: polymerase chain reaction spots the cause
Bibliographic record
Abstract
A haemodialysis patient developed a widespread haemorrhagic macular rash (Fig. 1) 10 days after varicella onset in a nursing contact. The rash was not typical of varicella; herpesviruses were not detected by culture or electron microscopy and the patient had in any case tested varicella‐zoster virus (VZV) seropositive. Biopsy, however, showed intranuclear inclusions suggestive of herpesvirus infection (Fig. 2), VZV DNA was detected by polymerase chain reaction (PCR), and an anamnestic rise of high‐avidity VZV‐specific IgG followed the rash (Fig. 3), indicating secondary varicella. This case demonstrates the utility of PCR in the diagnosis of atypical rashes of possible herpetic aetiology in immunocompromised patients, including haemodialysis patients.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.007 | 0.002 |
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".