What is the most effective vaccine?
The Sputnik V vaccine is 91.6% effective in preventing symptomatic COVID-19 and 100% effective in preventing severe coronavirus disease, according to an interim analysis of data from the phase 3 trial, published Tuesday in The Lancet medical journal. Several countries in Latin America will receive the Russian vaccine.
Countries of Latin America and the Caribbean have already been notified about the allocations of vaccines against covid-19 by COVAX
The high effectiveness of Sputnik V, which received criticism in 2020 because it was approved and deployed quickly, is close to the most successful ones such as that of Pfizer / BioNTech – which is already applied in Europe and the United States – which reports an effectiveness of 95% to prevent symptomatic infections, and Moderna’s vaccine, which is 94% effective in preventing symptomatic infections.
On the other end of the spectrum is the Chinese Sinovac vaccine, which is just 49.62% effective on average, and the Johnson & Johnson vaccine, which is 66% effective.
On Wednesday, UK researchers reported that the Oxford / AstraZeneca vaccine would reduce transmission of the virus, rather than simply reducing the severity of the disease.
While some companies and laboratories continue to do trials, and others are already distributing their vaccine, this is what we know about the efficacy of 8 of them, developed by Pfizer / BioNTech, Moderna, Johnson & Johnson, AstraZeneca, Novavax, Sputnik V, Sinopharm and Sinovac.