Chlamydia Transmission: How is it Spread? (Sexual Health Info)

Chlamydia is a sexually transmitted infection (STI) that is caused by the bacterium Chlamydia trachomatis. It is not transmitted through drinking or smoking after someone. Chlamydia is spread through sexual contact, including intercourse, oral sex, and anal sex. It can also be spread from an infected mother to her baby during childbirth.