HPV virus in men can cause health problems, too. The vaccine doesn’t work for them?
“It can increase a man’s risk of getting genital cancers, although these cancers are not common. HPV can also cause genital warts in men, just as in women.”
It does, but the cancer risk to men is minimal, unless they're gay, which puts them at risk for anal and rectal cancers.
Btb, a recent study found HPV 16 in 25% of the tissue samples taken from 253 patients diagnosed with head and neck cancers, which suggests a strong link between HPV 16 and oral cancer. So, it's theoretically possible to catch HPV 16 from kissing.
HPV presents a much greater risk for women so the benefit of vaccinating them is much greater. Thus justifying spending more money on vaccinating them.
Men shouldn’t feel completely left out. Straight young men should receive some benefit from “herd immunity”.