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CDC HIV/AIDS/Viral Hepatitis/STD/TB Prevention News Update

BRAZIL; MEXICO; UNITED STATES: The Prevalence of Genital HPV and Factors Associated with Oncogenic HPV Among Men Having Sex with Men and Men Having Sex with Women and Men: The HIM Study


Sexually Transmitted Diseases Vol. 38; No. 10: P. 932-940

The authors noted that comparative studies of genital human papillomavirus among men who have sex with men (MSM), men who have sex with women and men (MSWM,) and men who have sex with women (MSW) "have not been conducted so far; however, such comparisons may be important for planning prevention strategies like vaccination." The participants, men ages 18 to 70, were enrolled in a study of genital HPV in Sao Paulo, Brazil; Cuernavaca, Mexico; and Tampa, Fla. Self-reports of sexual behavior were used to classify the men as MSM (n=170), MSWM (n=214) and MSW (n=3,326). HPV genotyping was conducted using cells from the penis and scrotum. Prevalence data were adjusted by country, while multivariable Poisson regression was used to assess factors potentially associated with genital HPV.

The results showed prevalence of genital HPV was generally higher among MSWM than among MSM or MSW for groups of HPV genotypes including nononcogenic types (51 percent, 36 percent, and 42 percent, respectively) and for multiple types (37 percent, 24 percent, and 29 percent, respectively). Among MSM and MSWM, age and alcohol consumption in the past month were associated with oncogenic HPV; "however, there were no statistically significant associations between sexual behaviors and genital HPV among MSM or MSWM." "Prevalence of genital HPV may be higher among MSWM than among MSW or MSM," the authors concluded. "Number of female sex partners was associated with genital HPV among MSW, but number of male anal sex partners was not associated with genital HPV among MSM and MSWM."


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