主播大秀

Human challenge trials are when volunteers are deliberately infected with diseases to help find vaccines or cures. In this episode of The Evidence, Claudia鈥檚 expert panel, including Chris Chiu of Imperial College London, Shobana Balasingham of Wellcome and Kondwani Jambo of the Liverpool School of Tropical Medicine look at what these trials have accomplished, how safe they are, and the long and oftentimes complicated history behind the practice.