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  • Title: COVID-19-Associated Chemosensory Loss Continues to Decline.
    Author: Reiter ER, Coelho DH, French E, Costanzo RM, N3C ConsortiumDepartment of Otolaryngology-Head and Neck Surgery, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA..
    Journal: Otolaryngol Head Neck Surg; 2023 Nov; 169(5):1386-1389. PubMed ID: 37232470.
    Abstract:
    Chemosensory losses have long been considered a cardinal symptom of COVID-19 infection. Recent studies have shown changing symptom profiles with COVID-19, including decreasing incidence of olfactory losses. We accessed the National COVID Cohort Collaborative database to identify patients with and without smell and taste loss within 2 weeks of COVID-19 diagnosis. Peak prevalence time intervals for variants were determined from Covariants.org. Using rates of chemosensory loss during the peak time interval for "Untyped" variants as baseline (4/27/2020-6/18/2020), odds ratios for COVID-19-associated smell or taste disturbance fell for each of the Alpha (0.744), Delta (0.637), Omicron K (0.139), Omicron L (0.079), Omicron C (0.061), and Omicron B (0.070) peak intervals. These data suggest that during the recent Omicron waves and potentially moving forward, the presence or absence of smell and taste disturbances may no longer have predictive value in the diagnosis of COVID-19 infection.
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