[Bogey78O]

Makes sense.

But for so many mutations to exist it would have to reproduce at an alarming rate. Because if what you said about the cold virus holds true it took centuries for it to mild down it seems.

[dark_lord]

Except remember there are hundreds and hundreds of different "cold" viruses. Otherwise we would just get it once as kids and not again, rather than every darn winter. And the cold viruses themselves do continue to mutate as well.