Thanks to Lynda.com for sponsoring this video! Visit https://www.lynda.com/earth for a 10-day free trial Thanks also to our Patreon patrons: - Today I Found Out - Jeff Straathof - Mark - Maarten Bremer - Duhilio Patiño - Alberto Bortoni - Avi Yashchin - Valentin - Nicholas Buckendorf - Antoine Coeur ___________________________________________ Want to learn more about the topic in this week’s video? Here's a keyword to get your googling started: herd immunity: immunity that occurs when the vaccination of a portion of a population provides protection for individuals who have not developed immunity ___________________________________________ Credits: Script Writer: Kate Yoshida (twitter:@KateYoshida) Script Editor: Emily Elert (twitter:@eelert) Video Illustrator: Omkar Bhagat (twitter:@TheCuriousEnggr) Video Director: Emily Elert (twitter:@eelert) With Contributions From: Alex Reich (twitter:@alexhreich), Henry Reich (twitter:@minutephysics), Peter Reich and Ever Salazar (twitter:@eversalazar) Music by: Nathaniel Schroeder: http://www.soundcloud.com/drschroeder _________________________________________ Like our videos? Subscribe on YouTube: http://goo.gl/EpIDGd And for exclusive early access to all our videos, sign up with Vessel: https://goo.gl/hgD1iJ Already subscribed? Help us keep making MinuteEarth by supporting us on Patreon: https://goo.gl/ZVgLQZ Also, say hello on: Facebook: http://goo.gl/FpAvo6 Twitter: http://goo.gl/Y1aWVC And find us on itunes: https://goo.gl/sfwS6n ________________________ References: Alecca, J. (2015, March 31). Measles vaccinations jump after scare, public dialogue. Seattle Times. http://www.seattletimes.com/seattle-n... Bohlke, K., Davis, R.L., Marcy, S. M., Braun, M. M., DeStefano, F., Black, S.B., Mullooly, J.P., Thompson, R.S. (2003). Risk of Anaphylaxis After Vaccination of Children and Adolescents, Pediatrics, 112, 815-820. http://pediatrics.aappublications.org... Center for Disease Control (2015, August 17). Vaccines and Immunizations: Possible Side-effects from Vaccines. http://www.cdc.gov/vaccines/vac-gen/s... Chapman University (2014). Social Reality Index. https://www.chapman.edu/wilkinson/_fi... Chen, R.T. (1999). Vaccine risks: real, perceived and unknown. Vaccine, 17, S41–S46. Kimmel, S. R. (2002). Vaccine Adverse Events: Separating Myth from Reality. American Family Physician, 66, 2113–2120. http://www.aafp.org/afp/2002/1201/p21... National Safety Council (2015). Injury Facts. http://www.nsc.org/learn/safety-knowl... The University of Michigan C.S. Mott Children's Hospital (2015). National Poll on Children's Health: Safer, with More Benefits: Parents’ Vaccines Views Shifting, Volume 24 Issue 2. http://mottnpch.org/sites/default/fil...