RESULTS AND DISCUSSION
One-hundred and five patients presenting with COVID-19-related OD were
recruited in the study based on subjective symptoms two weeks after
symptom onset. Based on the identification-sniffing test, 28 patients
were still anosmic, 24 were hyposmic and 53 had recovered from their
olfactory symptoms and were normosmic. Clinical and demographic
characteristics of the patients are shown in Table I . Patients
included in the three study groups were comparable. Anosmic and hyposmic
patients were grouped for the virological and immunological analyses
presented below and are referred to as anosmic.