• Chlamydia is the most common STI in the United States.
  • Like most STIs, rates of chlamydia are highest in teens and young adults.
  • Chlamydia can be cured with antibiotics, but often there are no symptoms, so people do not seek treatment.
  • Untreated gonorrhea can lead to more serious problems, such as pelvic inflammatory disease (PID) Syphilis can cause serious damage to the heart, brain, and other organs.
  • It may eventually lead to death.
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