Watch the full-length episode at http://video.pbs.org/video/2365322027/?Utm_source=youtube&utm_medium=pbsofficial&utm_campaign=nova_covefullprogram (US Only)
Premieres Wednesday, September 10 at 9/8c on PBS (check your local listings). http://www.pbs.org/wgbh/nova/
NOVA “Vaccines — Calling the Shots” explores the science and confusion surrounding vaccines in the 21st century amid the return of vaccine-preventable diseases. Using the science of immunization, NOVA tracks outbreaks and sheds light on the risks of opting out.