Moscow: Russian President Vladimir Putin's spokesman on Friday said that "dirty methods" were being used to discredit the Russian Sputnik V vaccine to block its access to other countries' markets.
"The competition is, first, being politicised, secondly, dirty methods are being used to discredit our vaccine," Dmitry Peskov said at his daily call with Russian journalists.
"Sometimes, certain countries and their pharmaceutical corporate giants don't use very polite methods, to block the vaccine's access to different countries," he told journalists.
Putin ordered a "large-scale" vaccination against COVID-19 to begin in Russia with the domestically developed Sputnik V vaccine that is still undergoing advanced studies needed to ensure its safety and effectiveness.
Russia boasted that Sputnik V was the world's "first registered COVID-19 vaccine" after the government gave it regulatory approval in early August.
The move drew criticism from international experts, who pointed out that the vaccine had only been tested on several dozen people at the time.
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Putin has shrugged off doubts about it, saying in August that one of his daughters was among the early vaccine recipients.
Over the past months, Sputnik V has been offered to medical workers and teachers, even as it was still in the middle of advanced trials.