A groundbreaking survey of Facebook users suggests that around 1% of Britons are showing symptoms for Covid-19 at any given time, with the proportion in Scotland rising as high as 3.5% over the last week.
The findings are part of Facebook’s Covid-19 symptom survey, a global effort on the part of the company to use its enormous user base to track the spread of the virus.
Since its launch in April, around 120,000 people in the UK have taken part in the survey, registering the presence or absence of Covid-19 symptoms by following a prompt from the social network. Globally, there have been more than 10m responses, the company said.
The survey is being run in collaboration with statisticians at the University of Maryland, who worked with Facebook’s Data for Good team to build a publicly available map and dashboard visualising the international results.