umm this seems non-ideal. I assume people want to be vaccinated against the damages covid causes, neurological, cardiovascular, etc, not just against the symptoms of covid.
b) It's likely that it is protecting against those. But hard to specifically prove that it's protecting against each and every symptom. I think the hope is that if you don't develop lung issues, you are unlikely to develop long term damage.
Maybe I'm misunderstanding the data here. It seems like we've only directly proven that the vaccine has been effective at reducing the normal symptoms (coughs, fevers) to the point where candidates don't seem to be prompted enough to go get tested anymore. It doesn't directly prove those candidates didn't get covid.