‘Massive numbers of people’ needed to do contact tracing

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Published on 24 May 2020, 19:29
State governments across the country are hiring thousands of people as contact tracers to track the spread of COVID-19 and to help bring it under control. The data collected from contact tracing can help researchers better understand how the virus spreads, and what mitigation methods work. ProPublica reporter Caroline Chen joins Hari Sreenivasan with more.
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