IMPORTANCE
Global use of human papillomavirus (HPV) vaccines to prevent cervical cancer is impeded by cost. A 2-dose schedule for girls may be possible.
OBJECTIVE
To determine whether mean antibody levels to HPV-16 and HPV-18 among girls receiving 2 doses was noninferior to women receiving 3 doses.
DESIGN, SETTING, AND PATIENTS
Randomized, phase 3, postlicensure, multicenter, age-stratified...