1. Gardasil Approved to Prevent Genital Warts in Males - US News and World Report
Caused by human papillomavirus

2. Fewer Genital Warts Thanks to HPV Vaccine Program - US News and World Report
Australia sees a drop in cases following free Gardasil shots, researchers say

3. Genital warts : Causes, incidence, and risk factors  (Trust Mark: Doctor-Reviewed)
The virus responsible for genital warts is called human papilloma virus (HPV. This virus can cause warts on the penis, vulva, urethra, vagina, cervix, and around the anus. HPV infection around the genitals is common, although most people have no s...• Reviewer: Susan Storck, MD, FACOG, Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine; Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.