Loss of smell and taste: a new marker of COVID-19? Tracking reduced sense of smell during the coronavirus pandemic using search trends.

Expert Review of Anti-infective Therapy
George CherryB Nirmal Kumar

Abstract

It has been demonstrated that reduction in smell and/or taste is the most predictive symptom in SARS-CoV-2/Covid-19 infection. We used Google Trends to analyze regional searches relating to loss of smell and taste across Italy, Spain, France, Brazil, and the United States of America and determined the association with reported Covid-19 cases. In order to retrieve the data, we built a Python software program that provides access to Google Trends data via an application program interface. Daily COVID-19 case data for subregions of the five countries selected were retrieved from respective national health authorities. We sought to assess the association between raw search interest data and COVID-19 new daily cases per million for all regions individually. In total, we yielded 2188 sets of Google Trends data which included 548 time series of 4 anosmia and ageusia search concepts over the study period for 137 regions. These data indicated that differences in search interest for terms relating to anosmia and ageusia, between regions, is associated with geographical trends in new Covid-19 cases. We feel that Google search trends relating to loss of smell can be utilized to identify potential Covid-19 outbreaks on a national and region...Continue Reading

References

Mar 7, 2020·BMC Medical Informatics and Decision Making·Chonghui GuoJingfeng Chen
Mar 14, 2020·Lancet·Roy M AndersonT Déirdre Hollingsworth
Apr 13, 2020·International Forum of Allergy & Rhinology·Abigail WalkerPavol Surda
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Jun 25, 2020·Endoscopy·Lorenzo DioscoridiMassimiliano Mutignani

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Citations

May 22, 2020·JAMA Otolaryngology-- Head & Neck Surgery·Joshua Dean Horton
Apr 26, 2020·Hepatology International·Gayatri RamakrishnaNirupma Trehanpati
Apr 10, 2020·Head & Neck·Darrin V BannDavid Goldenberg
May 23, 2020·Journal of the American Heart Association·Tarek AlsaiedArwa Saidi
Apr 22, 2020·Current Tropical Medicine Reports·Alfonso J Rodriguez-MoralesSebastián Hernández-Botero
May 6, 2020·Practical Neurology·Sofia Mermelstein
Jun 25, 2020·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Fazilet AltinCengiz Bal
Oct 6, 2020·Frontiers in Neurology·Alessandra GoriAnna Maria Zicari
Dec 9, 2020·Infectious Diseases·Julia SchnoellDavid Tianxiang Liu
Dec 29, 2020·Frontiers in Cell and Developmental Biology·Shijia Yu, Mingjun Yu

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Methods Mentioned

BETA
Polymerase Chain Reaction
PCR

Software Mentioned

pytrends
Google trends
Google Trends Related Queries
Python
Trends
Google search

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