Health & Safety Coronavirus Vaccine Study Yields Positive Preliminary Results 10:12am May 18, 2020 by Joe Palca Health Medical Treatments Global Health Share URL copied to clipboard! Play Pause There was an error loading the media player. Copyright 2020 NPR. To see more, visit https://www.npr.org. 300x250 Ad More Morning Edition National NPR College Podcast Challenge: 'Finding True Love' World News What does the international community make of Trump's 2024 America first policy? 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate