Anthony Kuhn April 25, 2016 Updated April 26, 2016 20160425_atc_a_criminal_ring_in_china_sold_expired_vaccines.mp3 Listen • 3:35 20160425_atc_a_criminal_ring_in_china_sold_expired_vaccines.mp3 Copyright 2016 NPR. To see more, visit http://www.npr.org/. Anthony Kuhn