Russia has been pushing extensively for a Covid-19 vaccine for quite some time now amid the race to produce world's first coronavirus vaccine.In the latest reports, the final check-up of volunteers testing the coronavirus vaccine, which is developed by Gamaleya National Research Center of Epidemiology and Microbiology, showed immunity in all participants, the Russian Defence Ministry said."The results of the check-up clearly demonstrate an unmistakable immune response attained through the vaccination.