That is a part of the CV that I personally find both interesting & strange Mraz.
CV “apparently seems” to negatively affect mostly older people and those with health problems and/or comorbidities the most. BUT yet there are those with one foot already in the grave from other causes that have little problem with the CV, if they even catch it at all.
And then there are others that from all appearence & evidence are the picture of health, some even young; that the CV gives a very hard time. Even ravaging some to the point of death.
“To me”, that is one of the strangest aspects of the CV.
I have a lifelong friend who is a Biologist & researcher in North Carolina. He & I were talking about this aspect of the CV many months ago.
His, and a few of his peers; “hypothesis/theory” was that this could possibly be to an unknown genetic problem/defect in those, even the young & apparently healthy; that made them more susceptible to CV & problems with it.
And conversely, the old & not so healthy who did not catch CV or had few problems, if they were even infected; did not have those genetic problems/defects.
Of course he stressed this was just a “hypothesis/theory” that had NOT been proven or even researched, as far as he knew; at the time of our discussion.
To me it will be interesting to see if any explanation of this is ever found.