Recurrent invasive group A streptococcal infection with four-limb amputation in an immunocompetent child
Bibliographic record
Abstract
We report a previously well paediatric patient with two distinct presentations of invasive group A streptococcus (GAS) infection resulting in significant morbidity. The first episode, following GAS pharyngitis, involved multiorgan dysfunction syndrome. This included cardiorespiratory and acute hepatorenal failure and purpura fulminans that eventually necessitated four-limb amputation. The second episode occurred 12 months later, from undetermined aetiology, and resulted in septic shock. Molecular analysis of the emm gene and PCR for Serum Opacity Factor revealed that the initial isolate was M Type 4 and sof gene positive while the second isolate was M Type 1 and sof gene negative. Immunological investigations, including CH50, quantitative IgA, IgM and IgG, and flow cytometry measuring lymphocyte subsets, and vaccine response to measles, mumps, rubella and pneumococcus were normal. This is the first report of recurrent bacteraemia from different strains of Streptococcus pyogenes infection in an apparently immunocompetent child.
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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".