https://www.mirror.co.uk/news/uk-news/covid-symptom-found-main-sign-24849552
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8/27/21 at 12:06am
Organization
Mirror Online
Author
Ryan Merrifield
The ZOE Covid app study at King's College London teamed up with The University of Maryland Facebook COVID-19 Symptom Survey and the Israel Corona Study to compare data from around the world
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