To rein in the invisible spread of the virus, a special branch of science has exploded: Contact tracing. It's the careful, sometimes intimate task of figuring out where the coronavirus might have spread in a community, and who is at risk. This week on Petrie Dish, TPR's podcast about the science of the pandemic, we hear from the disease detectives who are tracking down possible Covid-19 carriers before they even get sick. We also dig into state-by-state plans to ramp up contact tracing to safely restart the economy, and compare U.S. contact tracing efforts with those across the world.
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