Answer to Photo Quiz: Adenoviral Pneumonia
Bibliographic record
Abstract
The pneumocytes show enlarged, smudgy nuclei and intranuclear inclusions consistent with an adenovirus cytopathic effect, diagnostically confirmed by immunohistochemistry. The xTAG respiratory virus panel test (Luminex Molecular Diagnostics, Inc., Toronto, Canada) showed adenovirus only. Viral culture on bronchioalveolar lavage fluid was also positive for adenovirus (serotype 3). A quantitative PCR demonstrated more than 2 10 6 adenoviral copies per milliliter of blood. Adenovirusinfectioninchildren,militaryrecruits,andimmunocompromised patients is a well-described entity and accounts for at least 5 to 10% of pediatric and 1 to 7% of adult respiratory tractinfections.Themajorityoftheinfectionsareself-limitedand run a benign course. Adenovirus accounts for up to 20% of childhood pneumonia but is relatively uncommon in immunocompetent adults (2, 4, 5). Although fatality due to severe adenovirus infections in neonates, young children, and immunocompromisedindividualsisawell-describedentity,theseeventsarerather unusual in immunocompetent hosts and are mainly subjects of case reports (1). Of the many different types of adenovirus, serotypes 3 and 7 are most often associated with severe infections. Clinically, patients with adenovirus infection may exhibit lobar pulmonary consolidation mimicking a bacterial infection (4). In addition, patients with fulminant adenoviral infection may develop clinical features such as respiratory failure, shock, and disseminated intravascular coagulopathy, further complicating the distinction from bacterial sepsis. Thepresentpatientdidnothaveanidentifiablecauseforhis immunodeficiency other than his new-onset diabetes, diagnosedatthetimeofadmission.Veryhighviralloads,aspresent here, have been described to occur in adult stem cell transplant recipients and have been associated with an adverse outcome (3). Although immune alteration in diabetes is a known phenomenon, it is unclear whether diabetes alone could have contributedtotheextremedegreeof“immunodeficiency-like”status in this patient. The moderate respiratory illness in the patient’s son was also documented to be an adenoviral pneumonia (by xTAG respiratory viral testing), but the child recovered completely. Serotyping was not performed on the child’s
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.006 | 0.005 |
| Insufficient payload (model declined to judge) | 0.289 | 0.097 |
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".