Human Papillomavirus Infection and Knowledge and Attitudes About HPV Vaccines Among Men Who Have Sex With Men (MSM)

This is a observational study aims to assess anal and genital human papillomavirus (HPV) infection status among men who have sex with men (MSM) in China, and their knowledge and attitude about HPV vaccine.

Inclusion Criteria:

• ≥ 18 years old;
• Ever had homosexual behaviors in the past 12 months;
• Willing to take tests for HIV/HPV infection;
• Physically able and willing to provide written informed consent.