Just two days after the world celebrated the announcement from Pfizer and BioNTech that their Covid-19 vaccine had a 90% success rate, a Russian institution has one-upped the pharmaceutical behemoths with claims of a vaccine of 92% efficacy.
The “Sputnik V” vaccine was developed in the Gamaleya National Center of Epidemiology and Microbiology in Moscow, wherein early analyses have found the vaccine 92% effective. However experts have drawn attention to the fact that these results are based on far too small a total sample size of 20 Covid-19 cases:
“The Sputnik V vaccine efficacy amounted to 92% (calculation based on the 20 confirmed COVID-19 cases split between vaccinated individuals and those who received the placebo).”
In contrast, Pfizer and BioNTech drew their figure from the analysis of 94 Covid-19 cases.