The risk was very minor, and was in hindsight not worth waiting for.

But now that the data is in, though, when your option is two vaccines, one with very minor risk, and one with even less risk, and they are both equally effective, it's obvious that you should prefer the latter.

If you look at the FDA press release it does seem like they seem to have mostly narrowed down the at-risk groups since, I guess they might've also tweaked dosages at this point.

https://www.fda.gov/news-events/press-announcements/coronavi...