No abstract available
Plain language summary
This cohort study examines traditional surveillance and self-reported COVID-19 test result data collected from independent smartphone app–based studies in the US and Germany.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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COVID-19* / epidemiology
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Germany / epidemiology
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Humans
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Prevalence
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SARS-CoV-2
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Self Report