Quote:
Originally Posted by Toxigen
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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.