Vaccines for Sarbaco Viruses

Efforts to develop vaccines and anibody therapeutics for pandemic preparedness should consider sarbaco viruss circulating world wide. So just because these viruses could get into human cells, doesn't mean they will reproduce. Many other things have to be aligned. The binding toace too is old, and it can evolve very easily. Single mino ased changes to allow binding to human ace too. But what about infectivity in human cells? That's a whole another story,. And this does not address that. Nevertheless, their last sentence, i think, is important.