Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Chlamydia Infections ?
    ### Response:
    Chlamydia is a common sexually transmitted disease caused by bacteria. You can get chlamydia during oral, vaginal, or anal sex with an infected partner. Both men and women can get it.    Chlamydia usually doesn't cause symptoms. If it does, you might notice a burning feeling when you urinate or abnormal discharge from your vagina or penis.
    