One in nine American men have the oral human papillomavirus infection, or HPV, new figures suggest.
Oral HPV differs from the genital strain because it is contracted in the mouth and throat through oral sex, rather than penetrative sex.
Health researchers from the University of Florida studied data of people who contracted HPV in the United States and found an estimated 11.5 million men and 3.2 million women have the oral infection.
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