I don't claim to really understand the whole HPV thing. Apparently he probably had HPV at some point in his life, but his body was able to defeat that virus, since neither of us have this disease. It left behind a protein marker called p16 as evidence that the disease was once there. I tried to find something online about this, but it is so technical that I can't really understand what to copy and past. According to Kevin's oncologist, the upshot is that if you have the p16 marker, your survival odds improve. Hey any hope is good for me right now!