Check out our Patreon page: www.patreon.com/teded View full lesson: ed.ted.com/lessons/why-do-you-need-to-get-a-flu-shot-every-year-melvin-sanicas All year long, researchers at hospitals around the world collect samples from flu patients and send them to top virology experts with one goal: to design the vaccine for the next flu season. But why do we need a new one every year? Vaccines for diseases like mumps and polio offer a lifetime of protection with two shots early in life; what’s so special about the flu? Melvin Sanicas explains. Lesson by Melvin Sanicas, directed by Andrew Foerster. Thank you so much to our patrons for your support! Without you this video would not be possible. Rui Rizzi, Clair Chen, Joe Giamartino, Filip Dabrowski, Barbara Smalley, Megan Douglas, Justus Berberich, Duo Xu, Ghassan Alhazzaa, Yankai Liu, Pavel Zalevskiy, André Spencer, Claudia Mayfield, Kerstin M. Quinto, Ivan Tsenov, Ruby Solorzano, Narat Suchartsunthorn, Barun Padhy, Dale Dualan, Simone Kidner, Shawn Quichocho, Gi Nam Lee, Joy Love Om, Tony Trapuzzano, Devin Harris.

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