It is a virus that: Infects skin cells. It is also an std--is transmitted by sex. There are 100+ strains. Some infect the cervix --cause pre-cancer/cancer. Some infect the throat, anus or penis --cause pre-cancer/cancer. Infections are cleared by your immune system. Smoking or immunity problems slow this down. Persistent infections lead to pre-cancer or cancer. Vaccines, less partners & no smoking all help.
Answered 3/29/2017
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