The first of 30,000 volunteers in the US have received either a placebo or dose of the Oxford vaccine, to test whether it protects them from coronavirus
Source:
https://www.newscientist.com/article/2253415-human-trials-of-oxford-coronavirus-vaccine-have-begun-in-the-us/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home