“”Prevalence of HPV infection among females in the United States”
46% of women under 25 http://books.google.com/books?id=Elx37xzO0bsC&pg=PA992&lpg=PA992&dq=hpv+infection+rates+united+states+teenagers+precent&source=bl&ots=Sm5804LR6t&sig=BSLMZxBFTfRa5q1LKKv49hibo84&hl=en&ei=CxUkTemaJMSknQfH4aCUAQ&sa=X&oi=book_result&ct=result&resnum=6&ved=0CEQQ6AEwBQ#v=onepage&q&f=false
Your cite is from 2000. Mine is from 2007, therefore more current. The primary sources in both are the CDC. Thanks.