If already infected with genital warts, will gardasil 9 help prevent an infection of the anal region?

Multiple viruses: There are more than 100 different kinds of HPV -or human papilloma viruses, so any protection you can get from a vaccine is highly recommended. If there is any good news, having some warts already should protect you to some degree after your body 'recognizes' they are there. (That usually takes about 2 years). There is an antiviral cream -Aldara (imiquimod)-that may help. Also freezing, laser, etc