How many people will need to self isolate when contact tracing is in place? NHSX's contact tracing app, which hasn't yet been named, will be a voluntary download that members of the public will be encouraged to use. It would also slash how many people would need to self isolate as a result of contact tracing by thousands. 'I think contact tracing will always have some benefit, but the extent will depend where you are in the epidemic. Contact tracing is being implemented worldwide because it health health chiefs stay one step ahead of the virus.

Source: Daily Mail May 13, 2020 18:20 UTC