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Genital human papilloma virus is one of the most common sexually transmitted infections (STI). Two vaccines are commercially available to protect females against the types of HPV that cause most cervical cancers. One of these vaccines also protects against most genital warts. Both vaccines are recommended for 11 and 12 year-old girls, and for females 13 through 26 years old, who did not get any or all of the three recommended doses when they were younger. The approved vaccines protect against two or four, respectively, most common types of HPV. A number of further vaccine candidates are in development utilizing various technologies for expression of the antigens and various adjuvants. Some vaccines also are directed against more or different types of HPV or are designed as therapeutic vaccines by induction of T cell immunity.