LONDON – Results from two non-randomized phase I/II trials of the Russian COVID-19 vaccine Sputnik V that recently received conditional regulatory approval show both a frozen and a freeze-dried formulation of the two-shot vaccine had a good safety profile and induced antibody responses in all 76 participants within 21 days.
Reports out of Russia that the country approved a COVID-19 vaccine came with more questions than answers, as some in the rest of the world fretted over the apparently paltry degree of testing. Though the product has not completed phase III trials – human research thus far has involved only two groups of volunteers of 38 people each – Russia President Vladimir Putin is said to have declared Gam-COVID-Vac adequately studied.