Russia claims its Sputnik V vaccine is most effective against Delta coronavirus variant

The announcement came from the Russian Direct Investment Fund in a tweet in which it did not cite the scientific journal where the study was presented. The Delta variant is 60% more contagious than the original Chinese-born virus.

RIO DE JANEIRO, BRAZIL - The Russian Direct Investment Fund (RDIF) reported on June 15 that its Sputnik V vaccine is the most effective against the Delta variant of the coronavirus, it found after a recent scientific study.

"The Sputnik V is more effective against the Delta coronavirus variant, detected for the first time in India, than any other vaccine that has published results on this strain so far: the Gamaleya Center study submitted for publication in an international peer-reviewed journal," RDIF tweeted, in a post in which it did not cite the scientific journal where the study was submitted . . .

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