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HPV vaccine

Human papillomavirus (HPV) vaccine research focuses on the prevention of diseases, such as cervical cancer and genital warts, caused by sexually transmitted human papillomaviruses.

Of the more than 120 known HPV types, 37 are known to be transmitted through sexual contact.

Infection with sexually transmitted HPVs is very common in adult populations worldwide.

Although a few HPVs, such as types 6 and 11, can cause genital warts, most genital HPV infections come and go without ever causing any symptoms.

However, lingering infections with a subset of about 19 "high-risk" HPV types can lead to the development of cervical cancer or other genital/anal cancers.

Note:   The above text is excerpted from the Wikipedia article "HPV vaccine", which has been released under the GNU Free Documentation License.
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