Your impression is correct. The fact that it is an "old idea" is indeed unimportant, but what is very, very important is that large scale study over long perio

Your impression is correct. The fact that it is an "old idea" is indeed unimportant, but what is very, very important is that large scale study over long periods has already been performed on that vaccination platform so we really do know a lot about it. That means that the similarity to mRNA is a good thing in terms of any worries about unexpected consequences. Of course it also means that we know that the risk of any unexpected consequences for adenovirus vaccines is also very low.