<prompt> Answer this question truthfullyWhat is the association between Chlamydia trachomatis serotypes L1, L2, L3 and the disease known as Lymphogranuloma venereum LGV?  <response>: <reason> Chlamydia trachomatis serotypes L1, L2, and L3 are known to cause the sexually transmitted infection STI called Lymphogranuloma venereum LGV. 