ArticleEuropean archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery2022
Prevalence of acute olfactory dysfunction differs between variants of SARS-CoV-2-results from chemosensitive testing in wild type, VOC alpha (B.1.1.7) and VOC delta (B.1617.2).
Article in European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 16 citations in OpenAlex.
- Study of Chemosensory Enhancement through Neuromodulation Training (SCENT): Design and methodology of a randomized clinical trial for COVID-related persistent smell dysfunction.Contemporary clinical trials communications · 2026Article
- Mechanisms of COVID-19-associated olfactory dysfunction.Neuropathology and applied neurobiology · 2024Review
- Review
- Olfactory Function and Olfactory Disorders.Laryngo- rhino- otologie · 2023Article
- Substance P and Prokineticin-2 are overexpressed in olfactory neurons and play differential roles in persons with persistent post-COVID-19 olfactory dysfunction.Brain, behavior, and immunity · 2023Article
- Author's reply to the Letter to the Editor "The study of olfactory dysfunction in SARS-CoV-2 variants".European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2022Article
- Topical Administration of Mometasone Is Not Helpful in Post-COVID-19 Olfactory Dysfunction.Life (Basel, Switzerland) · 2022Article
- Olfactory and neurological outcomes of SARS-CoV-2 from acute infection to recovery.Frontiers in allergy · 2022Article
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5 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundOlfactory dysfunction is one of the leading symptoms of COVID-19. Previous data suggest a different prevalence between the wild type virus and its subsequent variants. Here, we report on a prospective study to psychophysically compare olfactory function in acute SARS-CoV-2 infection between wild type, VOC alpha and VOC delta.
methodsSARS-CoV-2 was confirmed by reverse-transcription quantitative real-time PCR and virus variants were differentiated by high-sensitive next-generation sequencing. Home-quarantined were sent a validated and blinded smell identification test. A detailed instruction ensured correct self-administration.
resultsA total of 125 patients were included in study. Patients with the wild type of SARS-CoV-2 self-evaluated their olfactory function significant lower on the visual analog score compared patients with the VOCs alpha or delta (4.1 ± 1.5 vs. 6.8 ± 2.9 and 7.3 ± 0.9; p < 0.001). Likewise, a significant difference of the prevalence of psychophysically confirmed hyposmia (wild type: 73%; alpha: 41%; delta 48%; p < 0.01) and smell test score (48 ± 25% vs. 70 ± 23% and 67 ± 18%; p < 0.01) could be seen between wild type on one side and VOCs alpha and delta on the other side.
conclusionIn this study, both self-reports and psychophysical testing revealed a significant higher prevalence of olfactory impairment in the wild type of SARS-CoV-2 compared to the VOCs alpha and delta.
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