Epidemiological Observations on the Association Between Anosmia and COVID-19 Infection: Analysis of Data From a Self-Assessment Web Application.

摘要: BACKGROUND: We developed a self-assessment and participatory surveillance web application for coronavirus disease (COVID-19), which was launched in France March 2020. OBJECTIVE: Our objective to determine if self-reported symptoms could help monitor the dynamics of COVID-19 outbreak France. METHODS: Users were asked questions about underlying conditions, sociodemographic status, zip code, symptoms. Depending on reported presence coexisting disorders, users told either stay at home, contact general practitioner (GP), or call an emergency phone number. Data regarding COVID-19-related hospitalizations retrieved from Ministry Health. RESULTS: As 29, 2020, opened 4,126,789 times; 3,799,535 electronic questionnaires filled out; 2,477,174 had least one symptom. In total, 34.8% (n=1,322,361) no The remaining directed self-monitoring (n=858,878, 22.6%), GP visit teleconsultation (n=1,033,922, 27.2%), (n=584,374, 15.4%). Emergency warning signs by 39.1% participants with anosmia, loss sense smell (n=127,586) versus 22.7% without anosmia (n=1,597,289). Anosmia fever and/or cough correlated (Spearman correlation coefficients=0.87 0.82, respectively; P<.001 both). CONCLUSIONS: This study suggests that may be strongly associated its severity. Despite lack medical assessment virological confirmation, self-checking data relevant tool trends. TRIAL REGISTRATION: ClinicalTrials.gov NCT04331171; https://clinicaltrials.gov/ct2/show/NCT04331171.