Here is something to think about.
HPV-16 is a STD. In New York, probably most other states too, it is a misdemeanor for a person who knows that he or she is infected with a sexually transmitted disease to have sexual intercourse with another person. People who know that they are infected with STD's that can cause death and who commit sex crimes or have unprotected sex with people who do not know of the infection may also be guilty of reckless endangerment, a felony.
Some states have defense for people who do not know they are infected or tells the victim of the infection and obtains consent.
Then there is the possibility of civil liabilities too. There have been such cases with herpes infection. No wonder Michael Douglas changed his story.