John Mitchell wrote, in part, "they can live together, the way a parasite
and its host are supposed to live,".
Living together  and host and parasite are not mutually compatible.  If he
were to change the word parasite to symbiote then the statement might work.
By definition, parasite means one organism living upon another to the
detriment of the host organism.  From my moderate level of knowledge, I
don't think that will ever happen in the case of Varroa and honey bees.

Mike Stoops
Lower Alabama, USA