From Smallpox To The Coronavirus: The History Of Vaccinations Explained | NBC News

Dr. Josefa Steinhauer explains the history of the first human vaccine and the early days of the anti-vaxx movement. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews Connect with NBC Nightly News online! NBC News App: https://smart.link/5d0cd9df61b80 Breaking News Alerts: https://link.nbcnews.com/join/5cj/breaking-news-signup?cid=sm_npd_nn_yt_bn-clip_190621 Visit NBCNightlyNews.com: https://nbcnews.to/2wFotQ8 Find Nightly News on Facebook: https://bit.ly/2TZ1PhF Follow Nightly News on Twitter: https://bit.ly/1yFY2s4 Follow Nightly News on Instagram: https://bit.ly/2tEncJD NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features NBCNews.com, MSNBC.com, TODAY.com, Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows. From Smallpox To The Coronavirus: The History Of Vaccinations Explained | NBC Nightly News