"The effectiveness of Sputnik V against the delta strain is, according to various estimates, from 83% to 90%, which is much higher than the effectiveness of other vaccines," TASS quoted him as saying.
According to the scientist, it is very good to supplement foreign Moderna and Pfizer with Sputnik V, and Sputnik V itself is best boosted with Sputnik Light.
Earlier, Gunzburg spoke about the possible effectiveness of Sputnik V against a new strain of coronavirus infection COVID-19.