[pvarangot]

The Sputnik adenovirus vaccine is easier to manufacture and they are allowing some countries to install their own capacity. I don't know if they improved the accuracy of their tests, they were kinda sketchy when they announced it.

The PR and marketing is not targeting the US for some reason, maybe because they think no one will want a "Russian" vaccine in the US or maybe because it's more expensive... but in other countries it's going to be "the" vaccine, so I hope it works.

[maxerickson]

They would need to do an FDA supervised trial.

Edit: the Oxford AstraZeneca and J&J vaccines are adenovirus and are nearing completion of their trials, so we are on track for much wider availability.

[s1artibartfast]

I suspect that the Chinese vaccine will be the most used outside of US and Europe.