How is vaccine against HPV?

— HPV: Naked ds DNA viruses of the papovavirus family that cause warts — More than 200 HPV serotypes, of which 40 may be sexually transmitted — Serotypes mainly involved in genital warts and cervix cancer: 16 and 18 — Major serotypes of common warts: 6 and 11 — Replication proteins : E — Capsid proteins: L1 (external ) L2 (internal) Vaccine is empty virus-like particle (only capsid proteins given after using yeast cell as place to replicate)