Most forms of hepatitis are not spread through casual contact. In addition, research is well underway for vaccines for gonorrhea, syphilis, genital herpes and HIV. None have yet proven safe and effective, but to say that no one has suggested such a thing is absurd.
I made a typo in what I wrote, I meant to say that this is the first time that anyone has ever suggested a MANDATORY vaccine for a disease which is not transmitted through normal, everyday contact.