👉 Chlamydia is a sexually transmitted infection (STI) caused by a bacterium called Chlamydia trachomatis, which can affect both men and women. It primarily affects males through sexual contact or during childbirth. Symptoms of chlamydia include fever, swollen glands, vaginal discharge, and pain in the lower abdomen. Treatment typically involves antibiotics to clear the infection and prevent complications such as不孕症。