Anti-Chlamydia antibodies are available for the immunological detection of bacteria. Chlamydia is an infectious disease caused by the bacterium Chlamydia trachomatis, a gram-negative bacterium. It is transmitted through sexual contact and childbirth.ÿOn the other hand, Chlamydia pneumoniae is a common cause of respiratory infection and pneumonia. Visit the antibody supplier page for further details, including target antigen, tested applications, and more.