Prevalence of SARS-CoV-2 Infections in a Pediatric Orthopedic Hospital
Bibliographic record
Abstract
Abstract This project assessed the prevalence of active and past infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in a specialized pediatric institution that did not provide care for coronavirus disease 2019 (Covid-19). The study was performed in Montreal, the city with the highest number of Covid-19 cases in Canada during the early phase of the pandemic. Testing for SARS-CoV-2 RNA in 199 individuals (39 children, 61 accompanying persons, 99 hospital employees) did not reveal active infection in any of the study participants. However, 22 (11%) of study participants had SARSCoV-2 IgG antibodies, indicating prior infection. Ten of these participants did not report symptoms compatible with Covid-19 in the 6 months prior to the study. Thus, although no evidence for active infection was found within the institution, consideration should be given to regular staff testing to detect asymptomatic spreading of SARS-CoV-2. In addition, it could be useful to test accompanying persons in children presenting for surgical procedures.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".