Group A Streptococcus Spinal Epidural Abscess During Varicella
Bibliographic record
Abstract
Multiple complications of varicella have been described. Musculoskeletal complications (osteomyelitis, septic arthritis, and necrotizing fasciitis) as well as neurologic complications (ataxia, encephalitis, and transverse myelitis) are well-known. We describe the cases of 2 children, ages 18 months and 5 years, who were admitted recently to 2 pediatric hospitals in Montreal with a resolving varicella, abdominal and lumbar pain, and a refusal to walk and in whom a diagnosis of epidural abscess caused by group A streptococcus (GAS) was established. No previous case of epidural abscess caused by GAS in the context of varicella has been reported. Epidural abscesses are rare in pediatrics and are caused mainly by hematogenous spread of Staphylococcus aureus. The diagnosis in pediatrics is challenging because it is rare and does not present as classically as in adults. The prognosis is related to the presence of neurologic deficits before surgery and to the rapidity with which the diagnosis and the intervention are made. These cases highlight a new clinical association in children of epidural abscess caused by GAS and varicella. An early clinical diagnosis requires a high index of suspicion when back or abdominal pain with or without neurologic signs and symptoms occurs during or soon after varicella.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".