With 4,000,000 people reporting to the ZOE COVID-19 Symptom Study they are able to produce accurate real time statistics of the prevalence of COVID-19 in the UK. The study is responsible for discovering loss of sense of taste and smell as a primary indicator of COVID-19. They are currently working on an Artificial Intelligence Tool to diagnose COVID-19. Please join the Symptom Study by downloading the App and start reporting if you are well or unwell.