Human papillomavirus (HPV) is the most common sexually transmitted infection in the United States, and persistent HPV infection is strongly associated with risk of cervical cancer and genital warts. The recently approved quadrivalent HPV vaccine targets the HPV strains responsible for approximately 70% of cervical cancers and 90% of genital warts. It is also effective in reducing the incidence of HPV-related conditions, especially when given prior to exposure to HPV. The vaccine is recommended for all girls aged 11 to 12 with catch-up vaccination for women up to age 26, and most insurance plans cover the vaccine. A second bivalent HPV vaccine is currently pending approval by the US Food and Drug Administration (FDA). HPV vaccination reduces the incidence of HPV-related cancers and precancerous lesions in the United States and abroad, though decisions regarding implementation of vaccination remain.