The heterogeneity of Human Papilloma Virus genotypes in the oropharyngeal cavity, anus, and urogenital sites.

The distribution of Human Papilloma Virus (HPV) genotypes is not homogeneous among the infectedcells in a specific anatomical site. Thus, we conducted a prospective cross-sectional studywith 2,130 Mexican men and women aged 16 to 80 years. We described the prevalence of HPVgenotypes at the oropharyngeal cavity, anus, and urogenital sites. The most prevalent genotypes inwomen were HR-HPV 66 (5.6%), 16 (4.2%), 59 (4.3%) and LR-HPV 6 (10.1%); for men, HR-HPV16 (4.2%), 53 (3.8%), 66 (3.5%) and LR-HPV 6 (14.1%). In the cervix the most frequent genotypeswere: 6 (7.7%) and 66 (4.6%); vagina 6 (0.4%) and 16 (0.4%); genital wart 6 (5.9%) and 11 (2.7%);external genitalia 6 (0.5%) and 66 (0.5%); oropharyngeal cavity 6 (0.06%) and 66 (0.05%). In bothgenders, the most frequent genotype was HPV 6. The prevalence of HPV genotypes 31 (p=0.016),52 (p=0.049), 56 (0.036), 6 (p<0.0001) and 11 (p<0.0001) showed significant differences when comparinggenders. The kappa analysis demonstrated that in males, the HPV genotypes in the urethra/balanopreputial sulcus and urethral/genital warts had moderate concordance. In conclusion, HPVgenotyping screening tests among anatomical sites should be performed simultaneously to reinforcecurrent strategies, as well as for the development of vaccines and the discovery of oncogenic potentialfor genotypes that are not commonly analyzed.

Prevalence, genotyping, and correlates of anogenital HPV infection in a population-based sample of women in Puerto Rico.

BACKGROUND: Oncogenic HPV infection is associated to anogenital cancer. We estimate the prevalence and correlates of anogenital HPV infection among a population-based sample of women aged 16-64 years living in the metropolitan area of Puerto Rico. METHODS: 564 women completed face-to-face and computer assisted interviews and self-collected anal and cervical specimens. HPV DNA testing used MY09/MY11 consensus HPV L1 primers and beta-globin as an internal control for sample amplification. Positive specimens were typed by dot-blot hybridization. RESULTS: Weighted prevalence of cervical, anal, and cervical/anal co-infection was 29.4%, 38.6%, and 17.1%, respectively. The commonest oncogenic HPV types detected in the cervix and anus were: 68 (8% vs. 7%) and 16 (5.5% vs. 5.1%), correspondingly. Having ≥3 lifetime sexual partners (OR: 2.3; 95% CI: 1.5-3.5) and last year anal intercourse (OR: 1.6; 95% CI: 1.1-2.5) increased the odds of anogenital HPV infection. Cervical infection was independently associated to anal infection (OR: 3.0; 95% CI: 2.0-4.6). CONCLUSIONS: Similar to others, our results confirm the burden of anogenital HPV infection in women and its relationship with sexual behavior. As vaccination increases, future studies should monitor changing trends in HPV infection in this population, and the relationship between anal and cervical HPV-related disease.