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Infectious Disease Professor On What Strategies Make COVID-19 Testing Effective05:56
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There have been many calls for more testing as the number of coronavirus cases continues to grow in many states. But how effective is testing at controlling the spread of COVID-19?

That's the question asked recently by researchers at Imperial College London. Here & Now's Tonya Mosley speaks with Nicholas Grassly, professor of infectious disease and vaccine epidemiology at Imperial College London.

This segment aired on April 27, 2020.

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