Russia’s Covid Vaccine Shows Potential in Peer Review, Lancet Reports

>Between June 18 and Aug 3, 2020, 76 healthy adults were enrolled to the two studies from the volunteer register (figure 1).

>43 adults were selected at the beginning of each study from the volunteer registry; 38 participants were included in each study and five people were kept as backup volunteers in case of dropouts (two for phase 1 and three for phase 2).

>Nine participants in each study received rAd26-S in phase 1, nine received rAd5-S in phase 1, and 20 received sequential injections of rAd26-S (on day 0) and rAd5-S (on day 21) in phase 2. All volunteers in the main group were analysed and additional volunteers from the backup groups were not needed.

>Thus, in each study, 38 volunteers were vaccinated. More men than women took part in the study (table 1).

is it fair to note this is a pretty small sample?