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Smell and taste alterations in COVID-19: a cross-sectional analysis of different cohorts #MMPMID32410386
Paderno A; Schreiber A; Grammatica A; Raffetti E; Tomasoni M; Gualtieri T; Taboni S; Zorzi S; Lombardi D; Deganello A; Redaelli De Zinis LO; Maroldi R; Mattavelli D
Int Forum Allergy Rhinol 2020[Aug]; 10 (8): 955-962 PMID32410386show ga
BACKGROUND: Olfactory (OD) and gustatory (GD) dysfunction have been proven to be a typical symptom of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection. However, their prevalence in different patient populations still needs to be clarified. METHODS: A cross-sectional study was performed from March 27 to April 1, 2020, in Northern Italy. Physicians administered a survey-based questionnaire to SARS-CoV-2-positive patients with the aim of assessing symptoms, focusing on OD and GD. Two groups were studied: group A, patients hospitalized at Azianda Socio Sanitaria Territoriale (ASST) Spedali Civili University Hospital of Brescia; and group B, home-quarantined subjects. RESULTS: A total of 508 patients were enrolled: 295 in group A and 213 in group B. Mean age +/- standard deviation (SD) was 55 +/- 15 years; 56% were men. Overall, OD and GD were present in 56% (95% confidence interval [CI], 51% to 60%) and 63% (95% CI, 59% to 67%) of cases, respectively. In group A, the prevalence of OD and GD was 44% (95% CI, 38% to 50%) and 52% (95% CI, 46% to 58%), respectively. In group B, the prevalence of OD and GD was 72% (95% CI, 65% to 79%) and 79% (95% CI, 73% to 84%), respectively. In the entire cohort, total loss of olfaction and taste was reported in 64% and 60% of cases, respectively. OD and GD occurred as the first symptom in 10% and 11% of cases, respectively; in the remaining cases, they occurred after a mean of 4 +/- 3 days following the first symptom. At the time of the questionnaire, complete resolution of OD and GD was reported in 52% and 55% of cases, respectively (mean duration, 9 +/- 5 days in both). CONCLUSION: OD and GD are more prevalent in home-quarantined subjects, and they are independently associated with younger age and female gender.
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Int+Forum+Allergy+Rhinol 2020 ; 10 (8): 955-962
