A UK trial that involves intentionally infecting healthy volunteers with the coronavirus will start in January if approved by health authorities. The aim is to establish the minimum infectious dose before testing potential vaccines
Source:
https://www.newscientist.com/article/2257719-uk-trial-plans-to-infect-volunteers-with-the-coronavirus-in-january/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home