"At the moment, those who use Sputnik V definitely do not face the need to change the vaccine strain. Unfortunately, no one will be able to tell you what will happen next with the evolution [of the virus]. Our technologies indeed allow us to create new antigen variants of vaccines very quickly, literally for a couple of weeks," Gintsburg told Rossiya 1.
The health official also confirmed that Sputnik V could be used " an infinite number of times" for bi-annual re-vaccination.
17 December 2021, 12:02 GMT
In August 2020, Russia became the first country in the world to register a vaccine against the coronavirus, dubbed Sputnik V. The vaccine is being used in Russia's nationwide immunization drive and has been approved for emergency use in over 70 countries.