Anne,
I can relate to your comment about the futility of the blame game...and to try finding out the cause/origination of the virus.  However, imagine my shock when our ENT/Surgeon said to me after John's biopsy (he was still in recovery) and 
HPV+ diagnosis, "Have you had any abnormal pap tests?  (No) .. well I don't want to cause any problems in your marriage, but, you know, this is a sexually transmitted virus!"  
Not knowing a thing at that point about 
HPV, I was speechless.
Bonnie