[bawolff]

Scientists are people to. They don't magically know how a new never before seen virus works, instantly. It takes time to study it. Advice at the beginning are best guesses; some is going to turn out to be wrong. With time and experience, knowledge gets more firm, advice shifts and solidifies.

[jackfrodo]

Exactly. And going by vaccine timelines, we're still at the very beginning, so I don't blame people for being hesitant to get injected with it.

[bawolff]

We're hardly at the "beginning". There have been very large trials to establish safety and efficacy. Sure its not like we have years of study, but its hardly the beginning. More like the middle.