The Gaia theory of pre cellular evolution, as it pertains to cirrus cloud dynamics, would point out that an symbiotic relationship between cloud based nucleotides and land based nucleotides has existed for billions of years. Therefore, one isn't going to do in the other. That means that virus nucleotides are going to survive and then immune system based nucleotides are going to survive . . . both. And condition that leads to an Andraumada Strain would wipe out Gaia's surface/marine conductivity modulations and hence result in the entire region where the pathogen existed to experience chaotic inputs of climate without modulation, hence making the virus extinct. Virus can rise to clouds and more heavy cellular or more complex and heavy precellular life could not, whereas virus particles would have becuase of their size no ability to provide a conductivity change below. W/out the virus, the more complex life wouldn't have cirrus modulating ability, and hence would again wipe out living earth climate feedbacks.
BTW, I am an athiest who does his best passing on god in a secular world.