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Official website of the Johns Hopkins Antibiotic (ABX), HIV, Diabetes, and Psychiatry Guides, powered by Unbound Medicine. Johns Hopkins Guide App for iOS, iPhone, iPad, and Android included. Explore these free sample topics:
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- The most common viral sexually transmitted infection.
- All anogenital warts are caused by human papillomavirus (HPV) infection.
- Most (>90%) anogenital warts are benign, caused by HPV subtypes 6 and 11, which are "low risk" (for malignancy) HPV subtypes.
- HPV subtypes 16 and 18, the most common "high risk" subtypes, cause ~70% of cervical cancers but usually do not cause warts.
- These other "intermediate risk" HPV subtypes, including 16, 18, 31, 33, and 35, are associated with high grade squamous intrathelial neoplasia (HG-SIL) and are occasionally found in warts, particularly in persons with concurrent HIV infection.
- For additional non-genital wart information, see HPV module.