Can someone substantiate this idea that it's improbable for a virus to surmount these two evolutionary obstacles highlighted below? I'll copy the quote for the idea I've seen circulating, the bold part is the idea I'd like to hear challenged and would like to learn more about what its foundation is predicated upon. For ultimately, in order to create a human pandemic, an animal virus has to accomplish **two very diffi…
Maybe it's unlikely but when you also have a billion people in third world conditions.. it's not that unlikely after all.