This is a sexually transmitted infection (STI) caused by a certain type of Chlamydia. Chlamydia is another STI that is very common and easily spread. While LGV occurs throughout the world, it's been quite rare in Canada – until recently. Since the start of 2004, more than 20 cases of LGV have been found in Canada.
Lymphogranuloma venereum (LGV), also known as lymphopathia venerea, tropical bubo, climatic bubo, strumous bubo, poradenitis inguinales, Durand-Nicolas-Favre disease and lymphogranuloma inguinale, is a sexually transmitted disease caused by the invasive serovars L1, L2, or L3 of Chlamydia trachomatis. LGV was first described by Wallace in 1833 and again by Durand, Nicolas, and Favre in 1913. LGV is primarily an infection of lymphatics and lymph nodes.