Final answer:
The Gardasil vaccine can prevent the infection of genital warts caused by HPV in males.
Step-by-step explanation:
The infection prevented by administering the Gardasil vaccine to a male patient is genital warts. Genital warts are caused by the human papillomavirus (HPV), which is a sexually transmitted virus. The Gardasil vaccine can help protect against certain strains of HPV that can cause genital warts.