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Human papillomavirus (HPV)-related cancers occur in men and women, yet little is known about the natural history of HPV infections in men. Now, investigators have conducted a prospective study to assess the incidence and clearance of HPV among HIV-negative men aged 18 to 70. (One of the investigators receives support from Merck, which produces an HPV vaccine.)
Participants were recruited from the general population, universities, and organized healthcare systems in the U.S., Brazil, and Mexico. Before enrollment and every 6 months thereafter, they underwent swabbing of the penis and scrotum for HPV testing (detection of DNA by polymerase chain reaction; genotyping) and completed a computer-based questionnaire.
Although the full cohort involve…