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Abstract
Many COVID-19 patients are presenting with atypical clinical features. Happy hypoxemia
with almost normal breathing, anosmia in the absence of rhinitis or nasal obstruction,
and ageusia are some of the reported atypical clinical findings. Based on the clinical
manifestations of the disease, we are proposing a new hypothesis that SARS-CoV-2 mediated
inflammation of the nucleus tractus solitarius may be the reason for happy hypoxemia
in COVID-19 patients.