"The prevalence of HPV -- that's just one sexually transmitted infection, " she said.

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At any given time, 110 million Americans have a sexually transmitted infection, according to the Centers for Disease Control and Prevention.

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Others on its blacklist include those who have tested positive for a sexually transmitted infection (STI) during the previous 12 months and those who are HIV positive.

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You continue do risky sexual behaviors despite serious consequences, such as the potential for getting or giving someone else a sexually transmitted infection, the loss of important relationships, trouble at work, or legal problems.

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One major key to safety, regardless of whether one cares to use these products, to be in a monogamous sexual relationship where neither partner has an existing sexually-transmitted infection.

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It may be provoked by infection with Chlamydia trachomatis, a sexually transmitted denizen of the genital tract, and Ureaplasma urealyticum and Mycoplasma fermentans, two other inhabitants of the genitals.

ECONOMIST: Bugged by disease | The

Eight out of ten sportsmen studied by Oyudo had an infection call non-specific urethritis, and two tested positive for chlamydia, another sexually-transmitted disease.

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