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Human papillomavirus (HPV) is the name for a group of viruses that occur in both men and women. These viruses cause papillomas (warts). There are over 70 HPV types. About 30 of these types are sexually transmitted and cause genital HPV. The HPVs that cause the common warts that grow on hands and feet are different from those that cause warts in the genital or anal areas. Those HPVs are commonly transmitted through sexual contact and can infect people without causing visible warts or noticeable symptoms. HPV is one of the most common sexually transmitted diseases in the United States and is very contagious. It is most commonly spread through sexual contact with infected partners.
Some types of HPVs may play a role in cancers of the anus, vagina and penis. Certain types definitely increase the risk for cancer of the cervix (the lower part of the uterus). The types of HPV that cause raised external genital warts are not linked with cancer. These types are usually harmless. A test that detects HPV and determines which types are present is available.
Content last modified on Jun 9, 2005
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