More commentary on reddit: https://www.reddit.com/r/COVID19/comments/milxvy/qualitatively_distinct_modes_of_sputnik_v/ https://www.reddit.com/r/COVID19/comments

More commentary on reddit: https://www.reddit.com/r/COVID19/comments/milxvy/qualitatively_distinct_modes_of_sputnik_v/ https://www.reddit.com/r/COVID19/comments/milxvy/qualitative... It basically echoes comments here, that there's a significant reduction in neutralization (and paper says several instances of no neutralization in some sera). Comments also says that the pre-fusion spike stabilization used on the mRNA vaccine and J&J (which otherwise similar to Sputnik as both use Adenovirus vector) seems to be the difference.