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HPV vaccine protects against infection 8 years out
CBS News

A new long-term study shows that the human papillomavirus (HPV) vaccine appears to protect against the sexually transmitted virus for at least eight years.

HPV is thought to cause the majority of cervical cancers. Certain strains, such as HPV 16 and 18, are most strongly tied to these tumors. The virus is also believed to cause genital warts in both men and women and certain head and neck cancers.

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