Disseminated Histoplasmosis; A Threat in Advanced HIV Disease Population in Sub-Saharan Africa?
Bibliographic record
Abstract
Background: Histoplasmosis is a neglected acquired immune deficiency syndrome (AIDS)-defining disease in sub-Saharan African countries, which is commonly misdiagnosed as tuberculosis (TB) due to similar imagery and clinical features; patients usually receive presumptive anti-TB treatment that is considered as anti-TB treatment failure. Patients with advanced human immunodeficiency virus (HIV) disease (AHD), CD4<200/mm3 or World Health Organisation clinical stage 3 or 4, develop disseminated histoplasmosis (DH) diagnosed at a late stage or at post-mortem, owing to poor clinical suspicion, lack of rapid diagnosis tools to offer rapid and accurate results, and non-availability and accessibility of appropriate antifungal medications. We report 31 cases of DH amongst patients with AHD in sub-Saharan African population from the literature, highlighting the challenging care issue in sub-Saharan Africa. Results: Out of 31 reported cases 64.51% (20/31) were caused by Histoplasma capsulatum var capsulatum, 48.38% (15/31) being immigrants in Europe, Canada and Japan, with 41.93% (13/31) mortality, and 6 cases having no reported outcome. The poor index of suspicion on the part of clinicians; the lack of skilled laboratory personnel and rapid and accurate diagnosis tools of histoplasmosis for a proper detection of either classical or African histoplasmosis coexisting in many sub-Saharan African countries; and the non-availability and accessibility of appropriate antifungal medications were the most challenges in caring DH in advanced HIV disease population in sub-Saharan Africa. Conclusion: there is a need for prompt and routine screening of advanced HIV disease patients in sub-Saharan Africa for histoplasmosis as an AIDS-defining illness.
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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 | 0.003 | 0.014 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 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 | 0.000 |
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 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".