Exclusive: U.S. plans massive coronavirus vaccine testing effort to meet year-end deadline - Reuters

The United States plans a massive testing effort involving more than 100,000 volunteers and a half dozen or so of the most promising vaccine candidates in an effort to deliver a safe and effective one by the end of 2020, scientists leading the program told Re… https://www.reuters.com/article/us-health-coronavirus-usa-vaccine-exclus-idUSKBN22Y2L3