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HPV infection is caused by a virus. More than 100 types of HPV have been found. Some types cause genital warts and some can lead to cervical cancer. Types 6 and 11 cause most genital warts. Other types such as 16 and 18 are high-risk and can cause abnormal cell changes on the cervix.
HPV is spread by direct contact.
| By: | Healthwise Staff | Last Revised: June 28, 2010 |
| Medical Review: | Sarah Anne Marshall, MD - Family Medicine Jeanne Marrazzo, MD, MPH - Infectious Disease | |
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