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PBS News Hour
Why contact tracing is critical to containing COVID-19
Officials in Northern California’s Santa Clara County now say two residents there died of COVID-19 in early and mid-February -- weeks before what were believed to be the first U.S. fatalities. Dr. Tom Frieden, former director of the Centers for Disease Control and Prevention and now CEO of health initiative Resolve to Save Lives, joins John Yang to discuss how we can contain the virus’ spread.
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