<i>Streptococcus pneumoniae</i>-associated hemolytic uremic syndrome Canadian Immunization Monitoring Program ACTive National Pediatric Surveillance (1991 to 2019)
Bibliographic record
Abstract
Objectives: -associated hemolytic uremic syndrome (SP-HUS) is an underreported cause of pediatric atypical HUS. This study describes the epidemiology of the largest Canadian case series of SP-HUS in comparison with non-HUS invasive pneumococcal disease (IPD). Methods: The Canadian Immunization Monitoring Program, ACTive (IMPACT) is a national surveillance network for vaccine-preventable diseases. All confirmed IPD cases from 1991 through 2019 were included in the analysis. IPD cases with new HUS diagnoses were identified as SPHUS cases, and the rest as non-HUS IPD. Results: serotypes 3 (30%) and 19A (26.7%) were more common in SP-HUS compared to non-HUS (P < 0.0001). Pneumonia was more frequently observed in SPHUS than in non-HUS (67% versus 26%; P < 0.0001). All SP-HUS cases were hospitalized, compared with 71% of non-HUS IPD cases (P = 0.0004). SP-HUS cases had a longer median hospital length of stay than non-HUS (23.5 versus 7 days; P < 0.0001) and a higher proportion required an Intensive Care Unit (ICU) admission (70% versus 15.5%; P < 0.0001). Moreover, ICU stays were longer in HUS cases compared with non-HUS cases (9 versus 3 days; P < 0.0001). All 30 SP-HUS patients survived while 3% of non-HUS cases died (P = 0.33). Conclusions: SP-HUS was usually seen in IPD cases with pneumonia and was most commonly caused by serotypes 3 and 19A. ICU care was lengthy, hospital stay was longer. No deaths occurred among SP-HUS cases.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".