Transmission - critical18 Jan 2021 19:18
Deputy Chief Medical Officer Professor Jonathan Van-Tam said: “A safe, fully approved and meticulously controlled human challenge model for COVID-19 that is conducted by experienced experts may help in the search for safe and effective vaccines.
“Second, for vaccines which are in the late stages of development and already proven to be safe and effective through Phase III studies, human challenge studies could help us further understand if the vaccines prevent transmission as well as preventing illness.”