Russia has claimed its experimental new coronavirus vaccine has had a 100% success rate in a clinical trial. Every participant in the recent trial who received the vaccine, developed by the Russian Defence Ministry and the Gamaleya National Centre for Research on Epidemiology and Microbiology, have reportedly shown signs of immunity to SARS-CoV-2.The trial began 42 days ago when volunteers, understood to be scientific researchers, were injected with the vaccine at the Burdenko military military hospital in Moscow.Yesterday they returned to the institution to undergo a thorough examination of whether their immune systems had produced antibodies, indicating resistance to coronavirus.All participants were found to have developed some level of.