Cervical cancer results from uncontrolled, untreated growth of abnormal cells in the cervix. A sexually transmitted infection, the Human Papilloma Virus (HPV), can cause such cells to develop and grow.
(see ‘types & symptoms of STIs for more on HPV)

HPV can be found on skin in the genital area, in semen and also in the tissues of the vagina, cervix and mouth. It is primarily transmitted through skin-to-skin contact. Vaginal, anal and oral sex can also spread HPV. Over 50 types of HPV can infect the cervix; 6 of them account for nearly all cervical cancers. Other types of HPV cause genital warts

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