Loading...
Background: Human papillomavirus (HPV) infection is the most common sexually transmitted disease in the U.S. HPV serotypes 16 and 18 are responsible for about 70% of cervical cancers; serotypes 6 and 11 underlie about 90% of genital warts. Quadrivalent HPV vaccine (HPV4), which contains these four serotypes, received FDA approval in June 2006 for use in females. Bivalent HPV vaccine (HBV2; serotypes 16 and 18) was licensed in October 2009, also for use in females.
In October 2009, on the basis of additional studies, the FDA licensed HPV4 for use in males aged 9 through 26 years to prevent genital warts. At that time, the Advisory Committee on Immunization Practices (ACIP) stated that the vaccine may be given to males in this age group. Now,…