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Prevalence of New Onset Anosmia in COVID-19 Patients: Is The Trend Different Between European and Indian Population?

ABSTRACT: COVID-19 outbreak is major pandemic affecting lakhs of people all across the globe. Along with other nonspecific clinical features, reports mention anosmia to be an important symptom in COVID-19 positive patients. To study the prevalence of anosmia in confirmed COVID-19 patients, in Indian population and to ascertain its significance as a symptom of COVID 19. Study was done at a tertiary care COVID treating hospital. While eliciting detailed history from Covid-19 positive patients, all patients were asked about symptom of anosmia. Same was asked from control group of subjects who were COVID-19 negative. The history of anosmia was also elicited on discharge after the patients tested negative for COVID-19. 74 patients formed part of the study. 11 of 74 (14.8%) patients had anosmia. On using the chi square test for significance the difference was significant (p?

SUBMITTER: Mishra P

PROVIDER: S-EPMC7373335 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Prevalence of New Onset Anosmia in COVID-19 Patients: Is The Trend Different Between European and Indian Population?

Mishra Prasun P Gowda Vishwanath V Dixit Shivani S Kaushik Maitri M

Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India 20200721 4

COVID-19 outbreak is major pandemic affecting lakhs of people all across the globe. Along with other nonspecific clinical features, reports mention anosmia to be an important symptom in COVID-19 positive patients. To study the prevalence of anosmia in confirmed COVID-19 patients, in Indian population and to ascertain its significance as a symptom of COVID 19. Study was done at a tertiary care COVID treating hospital. While eliciting detailed history from Covid-19 positive patients, all patients ...[more]

PMID: 32837939

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Project description:Background: This systematic review had three aims: i) to determine the frequency of anosmia (or other smell disorders) and dysgeusia (or other taste disorders) in COVID-19 patients; ii) to determine whether anosmia or dysgeusia are independently associated with COVID-19 diagnosis; and iii) to determine whether anosmia or dysgeusia are prognostic factors for impaired outcomes among COVID-19 patients. Methods: On April 20 th, 2020, we search MEDLINE, Embase, Global Health, Scopus, Web of Science and MedXriv. We used terms related to COVID-19, smell and taste disorders. We selected case series, cross-sectional, case-control and cohort studies. We included studies with COVID-19 patients describing their symptoms; studies that compared smell and taste disorders between COVID-19 patients and otherwise healthy subjects; and studies comparing smell and taste disorders between COVID-19 severe and mild/moderate cases. Because of methodological heterogeneity and the limited number of results, a qualitative synthesis is presented. Results: From 31 reports, we selected six (n=2,757). Six studies reported the proportion of smell and taste disorders among COVID-19 patients. Two reports studied whether smell and taste disorders were independently associated with COVID-19 diagnosis. No reports studied the association with impaired outcomes among COVID-19 patients. The frequency of anosmia ranged between 22%-68%. The definition of taste disorders varied greatly, with dysgeusia present in 33% and ageusia in 20%. People who reported loss of smell and taste had six-fold higher odds of being COVID-19 positive; similarly, anosmia and ageusia were associated with 10-fold higher odds of COVID-19 diagnosis. Conclusions: The frequency of smell and taste disorders is as high as other symptoms, thus, at least anosmia for which the definition was more consistent, could be included in lists of COVID-19 symptoms. Although there is promising evidence, it is premature to conclude that smell and taste disorders are strongly associated with COVID-19 diagnosis. Registration: PROSPERO CRD42020181308.

Dataset Information

Prevalence of New Onset Anosmia in COVID-19 Patients: Is The Trend Different Between European and Indian Population?

Publications

Prevalence of New Onset Anosmia in COVID-19 Patients: Is The Trend Different Between European and Indian Population?

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