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."