[G13]

Originally Posted by Botten [You must be logged in to view images. Log in or Register.]

Your article:

"...most mutations adversely impact some aspect of virus function and are removed by natural selection. Hence, although a mutation that changes how a virus is transmitted or its virulence may readily appear in a virus population, it will not spread to high frequencies unless it is selectively advantageous..."

Delta variant through natural selection has mutated to transmit at a higher frequency due to a selective advantage on the spike.

And this is Off-Topic on p99 what we talk about means little to the world. Thou how we treat each other opens us to listening.