HPV is most often asymptomatic. Millions are infected and spread it without knowing they have it. It is the most common STD in the US. Most cases clear on their own in time, but thousands don't clear and the first sign is a bad PAP at some time down the road.
From 2005
http://www.justcoding.com/48873/huma...ilent-epidemic
Quote:
HPV is estimated to be the most common sexually transmitted infection in the United States.[166] Most sexually active men and women will probably acquire genital HPV infection at some point in their lives.[160] The American Social Health Association reported estimates that about 75–80% of sexually active Americans will be infected with HPV at some point in their lifetime.[167][168] By the age of 50 more than 80% of American women will have contracted at least one strain of genital HPV.[166][169][170]
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75% is hardly a made up or manufactured problem. It's Russian Roulette as to who will get the strains and have the biological factors that lead to cancer is all.