Democratic presidential candidate Joe Biden delivers remarks on Wednesday addressing the development and distribution of a covid-19 vaccine. Read more: https://wapo.st/2E7um1L. Subscribe to The Washington Post on YouTube: https://wapo.st/2QOdcqK Follow us: Twitter: https://twitter.com/washingtonpost Instagram: https://www.instagram.com/washingtonpost/ Facebook: https://www.facebook.com/washingtonpost/