Oxford professor, chairman of Bill Gates Global Health advisory board, and member of #COVID19 Vaccine Taskforce, Sir John Bell, on Channel 4: "These vaccines are unlikely to COMPLETELY STERILIZE a population, likely to have an effect of 60-70%." Original video - https://www.channel4.com/news/im-hopeful-were-going-to-start-to-get-readout-early-in-autumn-as-to-whether-this-thing-works-or-not-prof-sir-john-bell-on-oxford-vaccine