Viruses, in general, are foreign to the affairs of humans. They are simple sequences of nucleotides enclosed in a bubble of lipids and proteins. They do their job with efficacy and efficiency. Left to fate hands, they will do the genetic bidding by following the rules of chance. But with military discipline.
That is evolution: the survival of the fittest.

Medical Doctor (Infectious Diseases specialist/Professor of Medicine) and writer (narrative, theater).