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Published on Aug 15, 2014
Watch the full-length episode at http://video.pbs.org/video/2365322027... (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.