After Brazil unanimously voted to not approve Sputnik V vaccine because of flaws in its development and incomplete data regarding the efficacy of the vaccine, Russian developers of Sputnik V said that Brazil’s refusal to approve the vaccine was not justified on scientific grounds.
Denis Logunov, the main developer of Sputnik V, denied that the two viral vectors, or adenoviruses, used to produce the Covid-19 shot could replicate.
He said every batch underwent rigorous checks both by the Gamaleya Institute and the Russian health watchdog and none had shown the presence of adenoviruses that could replicate.
Logunov said the shot went through a four-stage cleaning and filtration process, which he said was rare among vaccine makers.