Chlamydia infection ( from the Greek , χλαμύδα meaning `` cloak '' ) is a common sexually transmitted infection in humans caused by the bacterium `` Chlamydia trachomatis '' .
Chlamydia infection ( from the Greek , χλαμύδος meaning `` cloak '' ) is a common sexually transmitted infection ( STI ) in humans . It is caused by the bacterium `` Chlamydia trachomatis '' .