[PBS NewsHour]

WATCH: ‘Massive Numbers of People’ Needed to do Contact Tracing

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WASHINGTON, D.C. (NewsHour) — 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 NewsHour’s Hari Sreenivasan with more.