In all environments and independent of the resource settings, two doses of human papillomavirus vaccine are recommended for girls ages 9 to 14 years, with an interval of at least 6 months and up to 12 to 15 months between doses. (sciencedaily.com)
In addition to protecting against 80 percent of cervical cancers, the new 9 - Valent human papillomavirus vaccine, which includes seven cancer causing HPV - types — 16,18,31,33,45,52 and 58 — has the potential to protect against nearly 19,000 other cancers diagnosed in the United States, including anal, oropharyngeal and penile cancers. (sciencedaily.com)
(Bosch FX, et al., «Prevalence of human papillomavirus in cervical cancer: A worldwide perspective,» J. Natl. Cancer Inst. (jhsph.edu)