Chlamydia trachomatis causes a sexually transmitted infection that can go undetected causing infertility. Adolescents and young adults consistently make up more than half of chlamydia cases.
Mandatory Credit:	Science Photo Libra/Getty Images via CNN Newsource

Chlamydia trachomatis causes a sexually transmitted infection that can go undetected causing infertility. Adolescents and young adults consistently make up more than half of chlamydia cases.
Mandatory Credit: Science Photo Libra/Getty Images via CNN Newsource

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There are millions of sexually transmitted infections in the US every year, but new data shows the epidemic may be slowing

Although sexually transmitted infections are still at an epidemic level in the US, scientists at the US Centers for Disease Control and Prevention are expressing cautious optimism about some decreases emerging in the newest data.