<prompt> Lymphogranuloma venereum LGV is caused by:Chlamydia trachomatisG. donovaniMadura mycosisHerpes genitalis  <response>: Ans. a. Chlamydia trachomatisLGV is an invasive STD, caused by C. trachomatis Serovars L1, L2 and L3, characterized by:MC serotype by L2L1, L3LGV serotypes are more invasive than others.Incidence is falling, Male: female3.4:1Clinical features:Pain less UlcerPainful lymph nodes Enlarged inguinal Lymph node called Bubo.Esthiomene elephantiasis of vulva rectal stricture, proctitis.Skin test positive - Frie test 