Covid-19 contract-tracing app ‘prevented at least 100,000 infections’

File photo dated 24/09/20 of the new coronavirus contact tracing app on an iPhone, which was launched across England and Wales, one of the major tech talking points of 2020.
File photo dated 24/09/20 of the new coronavirus contact tracing app on an iPhone, which was launched across England and Wales, one of the major tech talking points of 2020.