Causes
By Mayo Clinic staffThe human papillomavirus (HPV) causes warts. There are more than 40 different strains of HPV that specifically affect the genital area. Genital HPV is spread through sexual contact. In most cases, your immune system kills genital HPV and you never develop signs or symptoms of the infection.
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- Centers for Disease Control and Prevention, et al. Recommendations on the use of quadrivalent human papillomavirus vaccine in males — Advisory Committee on Immunization Practices (ACIP). MMWR Recommendations and Reports. 2011:60;1705.


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