A scientist controls parameters of product diafiltration process during the research and development of a vaccine against the coronavirus disease at a laboratory of BIOCAD biotechnology company in Saint Petersburg, Russia June 11, 2020. REUTERS/Anton VaganovMOSCOW: Russian scientists hailed the results of their first clinical trial of a potential coronavirus vaccine on Wednesday , saying it had been proved safe and that volunteers had developed an immune response.
More than 100 possible vaccines are being developed and tested around the world to try to stop the pandemic. Of 19 in human trials, only two are in the final Phase III - one by China's Sinopharm and another by AstraZeneca and the University of Oxford. "On non-specific immunity we can only talk about preliminary results. These show a good, positive tendency, a strengthening of non-specific immunity," she said.However any final conclusions about the immune response among the volunteers will be drawn by the Gamaleya Institute, which developed the vaccine, and are expected towards the end of the month.
The vaccine is administered in two doses and consists of two serotypes of the human adenovirus, each carrying an S-antigen of the new coronavirus, which enter human cells and produce an immune response, Smolyarchuk said.The platform used for the vaccine was developed by Russian scientists over two decades and had formed the basis for several vaccines in the past, including three against Ebola, the Sechenov University's Vadim Tarasov said.
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