Longitudinal Population-based Observational Study of COVID-19 in the UK Population

COVIDENCE UK is a population-based observational longitudinal study that has the following objectives: 1. To determine risk factors for incident COVID-19 and for adverse outcomes of COVID-19 in the UK population 2. To characterise the natural history of COVID-19 in the UK population 3. To evaluate the impact of COVID-19 on the physical and mental health of the UK population 4. To provide a resource from which to identify potential participants for future clinical trials, and to use data collected in COVIDENCE as comparison or control data for trial participants who have been randomised to receive one or more interventions.