Russia's Sputnik V vaccine protects against all variants of coronavirus, including the new type of the Delta strain, director of the Gamaleya National Research Center of Epidemiology and Microbiology Alexander Gintsburg has said, according to RIA Novosti.

Three cases of infection with the new variant of the Delta strain, AY.4.2, were recorded in Moscow and the Moscow Region on Monday, October 25.

"The Sputnik V vaccine is effective against all variants, none of the variants has become more epidemically significant than the original one," Gunzburg said in response to a question about whether Sputnik V would be effective against the new variant of the Delta strain.

He noted that new types of the Delta strain appear constantly.

UK experts said earlier that the new mutated form of coronavirus that some are calling "Delta Plus" may spread more easily than regular Delta. The UK Health Security Agency (UKHSA) has moved it up into the "variant under investigation" category, to reflect this possible risk.