
Pfizer's shot had the highest efficacy rate at 95 percent, closely followed by Moderna's vaccine and Sputnik V while AstraZeneca's vaccine had an average efficacy of 70 percent.
How much will Sputnik V vaccine cost you?
The interim report of the phase 3 data now presented includes results for more than 20,000 participants, who received both the first and second doses of the Sputnik V vaccine or placebo.
Last August, Russian President Vladimir Putin declared on national television that Russia became the first country to approve a COVID-19 vaccine.
"The development of the Sputnik V vaccine has been criticised for unseemly haste, corner-cutting, and an absence of transparency", wrote Professor Ian Jones and Professor Polly Roy in a comment published along with the Lancet paper.
"The Russian vaccine is based on a well-researched human adenoviral vector platform which has proven to be safe, with no long-term adverse effects in more than 250 clinical trials over decades", said Dmitriev.
In the first week of February, vaccination with Sputnik V is starting in several countries including Bolivia, Kazakhstan, Armenia, Algeria, Venezuela, and Iran.
Biden Won't Accept Scaled-Down Covid Aid Package: White House
Despite McConnell's criticism, he and Republicans have taken the same route to pass measures without help from the opposing party. Democrats now only have the Senate majority because of the tiebreaking vote of Vice President Kamala Harris .
Russian Federation made the vaccine available to the wider public in December, when Europe and the United States were just deploying the first doses of the vaccines made by their pharmaceutical companies.
The data published by Lancet was based on a study which was collected from almost 20,000 participants, three-quarters of whom received the two-dose regimen of the adenovirus-based vaccine, Gam-COVID-Vac, and one quarter received a placebo.
"India is a key partner in terms of production of vaccine and we expect that there'll be a restricted emergency use order for the Sputnik V vaccine.this month or next".
The two-dose vaccine was developed by Gamaleya Research Institute of Epidemiology and Microbiology, a Russian medical-research institute headquartered in Moscow.
"Four deaths were reported in the trial, none of which were considered related to the vaccine", one of the researchers was quoted as saying. "In general the perception of the vaccine is at a good level", he said. About 75 percent of the people received two shots of the vaccine 21 days apart and the rest got a placebo - a shot with an inactive substance. That is similar to the two-shot vaccine developed by Britain's Oxford University-AstraZeneca. The authors explain that using a different adenovirus vector for the booster vaccination may help create a more powerful immune response (compared with using the same vector twice), as it minimises the risk of the immune system developing resistance to the initial vector. She said there should no longer be any concerns about the Russian vaccine.
Last month, Putin ordered a large vaccination campaign to begin in Russian Federation.
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