As Britain's COVID-19 infections soared in the spring, the government reached for what it hoped could be a game changer – a smartphone app that could automate some of the work of human contact tracers.
LONDON - As Britain’s COVID-19 infections soared in the spring, the government reached for what it hoped could be a game changer – a smartphone app that could automate some of the work of human contact tracers.
“Given the infectiousness of SARS-CoV-2 and the high proportion of transmissions from presymptomatic individuals, controlling the epidemic by manual contact tracing is infeasible,” concluded the Oxford scientists’ paper, which was published in the journal Science two months later. He explained that people could use the app to report feeling unwell and it would anonymously alert other app users who recently had been in close contact with them. On April 28, he said he expected the app to be ready by mid-May.
Pat Gelsinger, chief executive of VMware Inc, a Silicon Valley tech firm hired to develop the app, told a Fox Business television interviewer on May 8, “I tell you, we think this is the best one in the world and we’re really thrilled to be working with the NHS in the UK to help bring it about.” The issue was no secret. Apple and Google had jointly announced in April that they would release a toolkit to better enable Bluetooth on contact-tracing apps. But to protect user privacy, it would only work on apps that stored data on phones, not central servers. The NHSX app didn’t work that way.
On June 18, weeks after the UK app was supposed to be rolled out, government officials announced a dramatic U-turn — they would abandon the app being tested on the Isle of Wight and try to create one that worked with the Apple-Google technology. Work had already begun on it and they had learned lessons from the test, they said.
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