This controversial coronavirus study could speed up vaccine research

Coronavirus vaccine development is advancing at a rapid pace, but a viable drug might not be available to the general population until early 2021, in a best-case scenario. A more controversial human trial may speed up development: Challenge trials. The World Health Organization has come up with guidelines for deliberately infecting volunteers with COVID-19 to see whether a vaccine candidate is effective and safe. Visit BGR's homepage for more stories. Coronavirus vaccine research is off to a gre...