Clip: Season 3 | 5m 15s
Viruses like influenza, Ebola and Zika can spread widely around the world through shipping, travel and other ways we humans move things from one place to another. DNA sequencing can provide a roadmap that a virus has followed to get where it is today. Watch as researchers use DNA sequencing to create a powerful tool to track the spread of the Zika virus around the world.
Aired: 05/30/16Video has closed captioning.