The CDC has started administering antibody tests to gauge true scale of coronavirus spread

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(Image credit: Kevin C. Cox/Getty Images)

The Centers for Disease Control and Prevention confirmed Saturday it has begun conducting antibody tests to determine the true number of people infected with the novel COVID-19 coronavirus, including those who never developed symptoms.

Unlike normal diagnostic tests, the antibody test can detect if a person has recovered from an earlier infection. If so, there's a chance they've built up some protection, which could help inform future responses to the virus and perhaps even allow some people to re-enter the workforce. However, it's not yet confirmed if antibodies ensure immunity, and there are still questions about the accuracy of such tests, especially those administered at home.

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Tim O'Donnell

Tim is a staff writer at The Week and has contributed to Bedford and Bowery and The New York Transatlantic. He is a graduate of Occidental College and NYU's journalism school. Tim enjoys writing about baseball, Europe, and extinct megafauna. He lives in New York City.