And in fact the two linages only different by 2 bases, something that can occur in a single host, it in no way indicates there were two jumps. All you need is f

And in fact the two linages only different by 2 bases, something that can occur in a single host, it in no way indicates there were two jumps. All you need is for a virus to be circulating in humans for like a week. As Stanford Biologist Michael Lim points out: >indeed he goes straight from seeing 2 lineages to concluding there were 2 jumps from wildlife days apart. That : (a) assumes the jumps were from wildlife, not people. (b) hides the fact that >2 mutations are being made in each host anyway, so separate events not needed https://twitter.com/michaelzlin/status/1632249640832880640 https://twitter.com/michaelzlin/status/1632249640832880640 >Indeed Worobey seems to think "Lineage A" and "Lineage B" are some profoundly different lineages but the tree he shows confirms they are different by only 2 bases. The "A" root has 2 fewer mutations than the "B" root. He doesn't point this out. Yet he must know. https://twitter.com/michaelzlin/status/1632249637645201408 https://twitter.com/michaelzlin/status/1632249637645201408