Nhận biết nguy cơ. Không nên chờ đợi triệu chứng xuất hiện. Đi xét nghiệm. Điều trị càng sớm càng tốt.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
People who are sexually active, especially having unprotected sex and with multiple partners, are at risk for contracting chlamydia. Chlamydia is caused by the bacteria ‘’Chlamydia trachomatis’’ and is contracted through vaginal, oral, or anal sex when mucous membranes come in contact with the bacteria. Anyone who is sexually active should get regular STI tests, including testing for chlamydia.  You are at higher risk if you have had unprotected sex with someone who has chlamydia or another STI.