HI there... not likely going to answer your questions well but here is my take.

HPV is a virus. Some viruses lay dormant. In my theory - someone may be exposed to HPV very early in life ( first sexual encounter - etc...) It likely takes a few things for it to manifest itself as a cancer. Firstly the right strain... then environment, and overall health. Maybe you are health compromised, maybe you smoke and drink, are stressed, or don't have the healthiest diet. Maybe all of the above. Regardless, this virus that is dormant, at some point finds a way in becomes active again and develops into a cancer - it may also have a lot to do with your overall immune system being able to kill the virus to start.

Regardless once it manifests itself you have a problem.

My one concern and I posted this on facebook today is Michael Douglas' claim that it was oral sex that caused his BOT tumor. Say what? If this virus is systemic, chances are it doesn't require oral sex, just sex, for it to be transmitted. It gives a false sense of security - "Oh he/she is HPV positive, but we've never had oral sex, so I can't get it." Hello. If you have had sex with someone who is HPV positive and are now positive yourself - you can quite possibly end up with an HPV cancer.

I do think because it is a virus, this is why it is easier to treat the cancer with rads and chemo but then the question remains, does it just kill the cancer, but not the virus (just forcing it into dormancy again)which could lead to another battle later, or does it kill both .

It does stand to reason that two different HPV's both of them cancer causing, could manifest at different times, so I would say yes, exposure, to say - a different strain could cause another dance with cancer, since you immune system seems to work against what you have - not having been exposed to it would mean that your system it would need to fight this virus as something new.