Background Olfactory dysfunction (OD) has been reported in coronavirus disease 2019
(COVID-19). However, there are knowledge gaps about the severity, prevalence, etiology …

Objectives/Hypothesis Olfactory dysfunction has been observed as one of the clinical
manifestations in COVID‐19 patients. We aimed to conduct a systematic review and meta …

While olfactory dysfunction associated with coronavirus disease 2019 (COVID-19) has
attracted considerable interest, few studies have tracked outcomes at serial time points or …

Objective To investigate olfactory dysfunction (OD) in patients with mild coronavirus disease
2019 (COVID‐19) through patient‐reported outcome questionnaires and objective …

Objectives Olfactory dysfunction (OD) is a common symptom of Coronavirus Disease 2019
(COVID-19). Although many patients have been reported to regain olfactory function within …

Background Olfactory dysfunction (OD) has been gaining recognition as a symptom of
COVID-19, but its clinical utility has not been well defined. Objectives To quantify the clinical …

Objective To determine the pooled global prevalence of olfactory and gustatory dysfunction
in patients with the 2019 novel coronavirus (COVID-19). Data Sources Literature searches of …

Objective To estimate the prevalence of olfactory and gustatory dysfunctions (OGDs) among
patients infected with novel coronavirus disease 2019 (COVID-19). Methods A systematic …

Objective To investigate the prevalence and recovery of olfactory dysfunction (OD) in COVID‐
19 patients 24 months after the infection. Methods From 22 March 2020 to 5 June 2022, 251 …

Olfactory and gustatory dysfunctions (OGD) are pathognomonic symptoms in patients with
Coronavirus Disease 2019 (COVID-19). This study reviews the associations of OGD with …