A Chinese study on 578 MSM (50 with HIV) identified a decreasing trend in anal HPV prevalence with increasing age: 71% (≤19 years), 62% (20 to 29 years), 64% (30 to 39 years) and 54% (40+ years) [ 30 ].
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High prevalence of anal high-risk HPV infection among transwomen: estimates from a Brazilian RDS study.
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Although a rare outcome, there has been an increasing trend in anal cancer incidence worldwide [ 13 ].