Between 45% - 65% (depending on the point of the pandemic) of positive COVID-19 tests were found in individuals without any symptoms. Over the past ten months the people who were most likely to test positive has changed considerably, and a very high proportion had no symptoms at all. Over the past ten months the people who were most likely to test positive has changed considerably, and a very high proportion had no symptoms at all. The National COVID-19 Infection Survey is the first longitudinal community survey of SARS-CoV-2 infection at the national and regional levels in the UK, using data from a representative sample (nearly 300,000 individuals aged 2 and up) in England. Full paper: Community prevalence of SARS-CoV-2 in England during April to November 2020: Results from the ONS Coronavirus Infection Survey.
