Prevalence of anosmia in coronavirus disease 2019‑confirmed cases

Hossam M. Abdelazeem, Amira E. Esmail, Alaa M. Abdelsamie

Department of Otorhinolaryngology, Faculty of Medicine, Benha University, Benha, Egypt


The current study aims to evaluate the prevalence of anosmia and the factors affecting it in coronavirus disease 2019 (COVID‑19)‑confirmed cases.
Patients and methods
A cross‑sectional, multicenter study was conducted on 400 COVID‑19‑confirmed patients. The clinical data were collected from patients, either hospitalized in COVID‑19 units of different isolation hospitals or home‑quarantined, in Egypt. Data were collected through a predesigned survey‑based 16 questionnaire, available in two forms, one in a written form and the other was online‑designed by Google forms.
The prevalence of anosmia was 68.8% in COVID‑19‑confirmed cases. About 41.1% of the patients had isolated anosmia. There were no significant differences between those with anosmia and those without as regards smoking and chronic rhinological status, P values were 0.118 and 0.132, respectively.
As a prevalent symptom of COVID‑19 patients, anosmia will raise the suspicion index of health staff in developing countries with limited access to the COVID‑19 test.
COVID-19, Anosmia, Corona virus.

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