ReviewCurrent allergy and asthma reports2020
The Loss of Smell and Taste in the COVID-19 Outbreak: a Tale of Many Countries.
Review in Current allergy and asthma reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 85 papers, 4 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
85 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Prevalence of oral manifestations in COVID-19: A systematic review.Reviews in medical virology · 2022Pooled it
- Self-reported olfactory and gustatory dysfunction and psychophysical testing in screening for COVID-19: A systematic review and meta-analysis.International forum of allergy & rhinology · 2022Pooled it
- Frequency and Clinical Utility of Olfactory Dysfunction in COVID-19: a Systematic Review and Meta-analysis.Current allergy and asthma reports · 2020Pooled it
- Onset and duration of symptoms of loss of smell/taste in patients with COVID-19: A systematic review.American journal of otolaryngologyPooled it
- Quantitative but not qualitative flavor recognition impairments in COVID-19 patients.Irish journal of medical science · 2022Trial
- The Unmet Need of Olfactory Testing in Inflammatory Disorders of the Upper Airways-An EAACI Position Paper.Allergy · 2026Review
- Recovery of Olfactory Function After Mepolizumab Treatment in Patients with Chronic Rhinosinusitis with Nasal Polyps: Influence of the Number of Surgeries.Biomedicines · 2026Article
- The lung-brain axis: elucidating the mechanisms of pulmonary-driven neurological disorders.Journal of neuroinflammation · 2026Review
- Sensory Deprivation and the Brain: Neurobiological Mechanisms, Psychological Effects, and Clinical Implications.Brain sciences · 2026Review
- Oral and maxillofacial manifestations of COVID-19.GMS hygiene and infection control · 2026Review
- A retrospective cohort study on the association between allergic rhinitis, sublingual immunotherapy, and COVID-19 symptomatology.Scientific reports · 2025Article
- Immunomodulatory Effects ofExpert reviews in molecular medicine · 2025Review
- Review
- Effect of carbon black and silicon dioxide nanoparticle exposure on corona receptor ACE2 and TMPRSS2 expression in the ocular surface.Scientific reports · 2024Article
- Machine learning predictive modeling of the persistence of post-Covid19 disorders: Loss of smell and taste as case studies.Heliyon · 2024Article
- The Prognostic Value of Olfactory Dysfunction in Patients with COVID-19: The COVIDORA Study.Life (Basel, Switzerland) · 2024Article
- Deprivation-Induced Plasticity in the Early Central Circuits of the Rodent Visual, Auditory, and Olfactory Systems.eNeuro · 2024Review
- Performance and explainability of feature selection-boosted tree-based classifiers for COVID-19 detection.Heliyon · 2024Article
- The top 50 most-cited articles about COVID-19 and the complications of COVID-19: A bibliometric analysis.F1000Research · 2024Article
- Evaluation of taste score and fungiform papillae quantification using digital image analysis in COVID-19 patients with smell and taste dysfunction.Dental research journal · 2024Article
25 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purpose of reviewOlfactory dysfunction in upper airway viral infections (common cold, acute rhinosinusitis) is common (> 60%). During the COVID-19 outbreak, frequency of sensory disorders (smell and/or taste) in affected patients has shown a high variability from 5 to 98%, depending on the methodology, country, and study. RECENT
findingsA sudden, severe, isolated loss of smell and/or taste, in the absence of other upper airway inflammatory diseases (allergic rhinitis, chronic rhinosinusitis, nasal polyposis), should alert individuals and physicians on being potentially affected by COVID-19. The evaluation of smell/taste disorders with a visual analogue scale or an individual olfactory or gustatory test, at the hospital or by telemedicine, to prevent contamination might facilitate an early detection of infected patients and reduce the transmission of SARS-CoV-2. During the COVID-19 outbreak, patients with sudden loss of smell should initiate social distancing and home isolation measures and be tested for SARS-CoV-2 diagnostic test when available. Olfactory training is recommended when smell does not come back after 1 month but can be started earlier.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.