The issue with all the vaccines so far has been the lack of antibodies success over a long enough period of time, I'm not familiar with the Russian data, but with other trials moderna, astra etc, it looks like the vaccine will need to be given more regularly than just once as anti body response has in some people required a booster after initial dose and even then there has been some subjects displaying antibodies at the 1 month post dose, but not at the three month mark, meaning you could get covid even after you have been vaccinated, without it mutating which is another issue which can usually be partly solved with a updated vaccine type jab every 12 months. Amazing what Russia and other none western countries can accomplish without the liability issues we face in the west. Modern western democracy and capitalism is inefficient and non productive, our innovation is drowning in political correctness and low productivity, with no hope in sight.