Participatory disease surveillance for a mass gathering — a prospective cohort study on COVID-19, Germany 2021

Nils Hohmuth, Ifrah Khanyaree, Anna-Lena Lang, Ohad Duering, Stefan Konigorski, Vukašin Višković, Tobias Heising, Friedemann Egender, Cornelius Remschmidt & Rasmus Leistner
Abstract Background Mass gatherings (MGs) such as music festivals and sports events have been associated with a high risk of SARS-CoV-2 transmission. On-site research can foster knowledge of risk factors for infections and improve risk assessments and precautionary measures at future MGs. We tested a web-based participatory disease surveillance tool to detect COVID-19 infections at and after an outdoor MG by collecting self-reported COVID-19 symptoms and tests. Methods We conducted a digital prospective observational cohort...
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