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1.
Chem Senses ; 462021 01 01.
Article in English | MEDLINE | ID: mdl-34097726

ABSTRACT

Although olfactory disorders (OD) are among the most significant symptoms of COVID-19, recovery time from COVID-19-related OD and their consequences on the quality of life remain poorly documented. We investigated the characteristics and behavioral consequences of COVID-19-related OD using a large-scale study involving 3111 French respondents (78% women) to an online questionnaire over a period of 9 months covering different epidemic waves (from 8 April 2020 to 13 January 2021). In the patients who subjectively recovered from COVID-19-related OD (N = 609), recovery occurred on average after 16 days and most of the time within 1 month ("normal" recovery range); 49 subjectively recovered in 1-2.5 months, and several cases took up to 6.5 months. Among the patients with ongoing OD (N = 2502), 974 were outside the "normal" recovery range (persistent OD) and reported OD for 1-10 months. Developing a persistent OD was more likely with increasing age and in women and was more often associated with parosmia and phantosmia. The deleterious impact of COVID-19-related OD on the quality of life was significantly aggravated by OD duration and was more pronounced in women. Because persistent OD is not infrequent after COVID-19, has deleterious consequences on the quality of life, and receives few solutions from the health practitioners, it would be beneficial to implement screening and treatment programs to minimize the long-term behavioral consequences of COVID-19-related OD.


Subject(s)
COVID-19/complications , Olfaction Disorders/ethnology , Adolescent , Adult , Age Factors , Aged , Aged, 80 and over , Female , Follow-Up Studies , Humans , Male , Middle Aged , Olfaction Disorders/epidemiology , Prevalence , Quality of Life , SARS-CoV-2 , Sex Factors , Smell , Surveys and Questionnaires , Symptom Assessment/methods , Time Factors
2.
Nat Commun ; 11(1): 5152, 2020 10 14.
Article in English | MEDLINE | ID: mdl-33056983

ABSTRACT

In response to the COVID-19 pandemic, many governments have taken drastic measures to avoid an overflow of intensive care units. Accurate metrics of disease spread are critical for the reopening strategies. Here, we show that self-reports of smell/taste changes are more closely associated with hospital overload and are earlier markers of the spread of infection of SARS-CoV-2 than current governmental indicators. We also report a decrease in self-reports of new onset smell/taste changes as early as 5 days after lockdown enforcement. Cross-country comparisons demonstrate that countries that adopted the most stringent lockdown measures had faster declines in new reports of smell/taste changes following lockdown than a country that adopted less stringent lockdown measures. We propose that an increase in the incidence of sudden smell and taste change in the general population may be used as an indicator of COVID-19 spread in the population.


Subject(s)
Communicable Disease Control/legislation & jurisprudence , Coronavirus Infections/epidemiology , Coronavirus Infections/prevention & control , Olfaction Disorders/epidemiology , Pandemics/prevention & control , Pneumonia, Viral/epidemiology , Pneumonia, Viral/prevention & control , Taste Disorders/epidemiology , Betacoronavirus , COVID-19 , Communicable Disease Control/standards , Coronavirus Infections/transmission , Epidemiological Monitoring , France/epidemiology , Hospitalization , Humans , Italy/epidemiology , Pneumonia, Viral/transmission , SARS-CoV-2 , Self Report , United Kingdom/epidemiology
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