Cause

Do viruses "cause" or "increase the risk" of contracting cancer?  No one has "any idea".

So, let's pretend a vaccine exists which protects an individual against cancer.  We need to "make up a name" for narrative purposes.  How about an "HPV vaccine"?

Catchy name, eh?

How does this "imaginary" vaccine work?

Google provides some "made up" information through "search":

• https://www.google.com/search?q=how+does+the+hpv+vaccine+work

The "knowledge" provided seems to imply a virus is or isn't involved.

Is there cause to believe that's backward?

Someone must know.