What is Chlamydia Infection?

A sexually transmitted infection caused by the bacterium Chlamydia trachomatis.

5 Facts You Should Know

  • It’s in the Young
    1 in 15 sexually active girls under the age of 19 has an active chlamydia infection at any given time.
  • There’s a Racial Component
    African-Americans are 5 times more likely to have chlamydia than Caucasians. Men who have a same sex preference also typically see higher infection rates of this disease.
  • It can be Persistent
    Chlamydia has been known to stay active in children who are born with it for 1 year or longer.
  • Anyone can get It
    If you are sexually active, then it is possible for you to contract chlamydia. It is especially problematic in the United States because American young people tend to have rapid, sexually active relationships.
  • It is Silent
    As few as 5% of women with an active chlamydia infection actually experience symptoms. About 10% of men also experience symptoms. It can be several weeks after exposure for symptoms to occur – if they occur at all.


Often take days to appear and become prominent. However, a few common symptoms include

  • Discharge from the penis or vagina (yellow or green)
  • Pain in the lower abdomen
  • Pain in the testicles
  • Painful sexual intercourse in women (dyspareunia)


Unprotected sexual intercourse.
Contact of infected genitals.
Testing Chlamydia tests use a sample of body fluid or urine to see whether chlamydia bacteria (Chlamydia trachomatis) are present and causing an infection
Things to remember
  • Women aged 15 to 24 are most commonly affected
  • Over 1 million Chlamydia cases are reported each year