by Rob LW
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Countries around the world are rolling out contact tracing apps to contain coronavirus. How will we know whether they work?

Countries around the world are rolling out contact tracing apps to contain coronavirus. How will we know whether they work?

Millions of people have downloaded apps designed to alert them to coronavirus exposure. Their effectiveness has yet to be proved. Science’s COVID-19 reporting is supported by the Pulitzer Center. Last month, when the Australian government launched a smartphone app […]

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