humans is selected for it's capacity to infect more human, which does means that when you run into one that has infected a lot of humans, it's going t o look optimised for the job.
s what they are talking about - that it's had the benefit of intelligent de sign by humans?
on doesn't count.
Only in John Larkin's private universe. There are lots of other animals cra wling into those caves who are just as well place to pick up a sample of ba t corona virus, which can mutate enough to infect them, and spread out to i nfect other species. Many more than there are speleological virus researche rs.