SARS-CoV-2 Virologic and Immunologic Correlates in Patients with Olfactory and Taste Disorders

Autor: Marco Benazzo, Irene Cassaniti, Eugenia Maiorano, Anna Calastri, Federica Novazzi, Alice Bonetti, Antonella Sarasini, Raffaele Bruno, Fausto Baldanti
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Microorganisms, Vol 8, Iss 7, p 1052 (2020)
Druh dokumentu: article
ISSN: 2076-2607
DOI: 10.3390/microorganisms8071052
Popis: The main object of the study was to investigate the SARS-CoV-2 molecular and serological pattern in patients with mild symptoms including anosmia and ageusia. A cohort of 69 patients with olfactory and taste disorders (OTDs) were enrolled and prospectively monitored. Serological and molecular assays for the characterization of SARS-CoV-2 IgG and SARS-CoV-2 RNA, respectively, were performed at the time of enrolment and after 7 and 14 days. Patients were stratified according to the symptoms’ onset. A total of 52 patients (75.4%) were diagnosed as COVID-19 positive being SARS-CoV-2 RNA and/or SARS-CoV-2 IgG positive. The remaining 17 (24.6%) were negative for COVID-19 and excluded from the analysis. We reported that only 34 out of 52 patients (65.4%) were positive for SARS-CoV-2 RNA. Moreover, the median time from onset of symptoms and enrolment was significantly higher in those patients with negative SARS-CoV-2 RNA in nasal swabs, suggesting that symptoms might last longer than SARS-CoV-2 replication. The great majority of patients (80%) developed SARS-CoV-2 IgG at three weeks after symptoms’ onset while the detectability of SARS-CoV-2 RNA dramatically decreased over time, suggesting the crucial role of combination of molecular and serological assays for the diagnosis of COVID-19 in those patients reporting mild symptoms.
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