Without a trace: do virus tracking apps really work?
Sign up for our free Health Check email to receive exclusive analysis on the week in health Get our free Health Check email Get our free Health Check email SIGN UP I would like to be emailed about offers, events and updates from The Independent. Recommended WHO urges UK to move to local contact tracing system Despite predictions that between 67.5 per cent and 85.5 per cent of potential app users would download apps, worldwide download rates of contact-tracing apps have so far been low, running approximately at 20 per cent. In broad terms, if you have 20 per cent of the population as active app users then there is only a 4 per cent chance of coming into contact with another app user. A second report from the Oxford researchers suggested that a well-staffed contact-tracing system that included digital as well as manual notifications could reduce infections by 4 per cent to 12 per cent and deaths by 2 per cent to 15 per cent if just 15 per cent of the population used the app. A UK-government commissioned study of more than 30,000 people showed that just 18 per cent of people agreed to self-isolate when someone working for the country’s manual contact-tracing system actually called them and explained why.
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