People line up to undergo a voluntary test of Coronavirus, part of a study of the University of Padua, in Vo' Euganeo, a town of 3,500 people at the epicenter of the Veneto cluster, which was sealed off until Sunday, March 8, 2020. Italy announced a sweeping quarantine early Sunday for its northern regions, igniting travel chaos as it restricted the movements of a quarter of its population in a bid to halt the new coronavirus' relentless march across Europe. (AP Photo/Andrea Casalis)

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