Lymphogranuloma venereum (LGV):
Lymphogranuloma venereum (LGV) is a form of the common sexually transmitted infection chlamydia. It is caused by specific strains of the Chlamydia trachomatis bacteria (strains L1, L2, L2b and L3) and is more invasive (i.e. gets into the tissue of the body) than more common types ofChlamydia, so can have more serious consequences if left untreated.
LGV is common in parts of Africa, Asia, and South America but was rare in Western Europe before 2003. In 2004 a cluster of LGV infections was seen amongst gay men who had attended sex parties in the Netherlands. The infection was quickly spread across Western Europe and cases have also been reported in the United States and Australasia. Since then, the number of cases of LGV in the UK rose steadily, peaking in 2010, and it is now considered a sustained outbreak. The majority of LGV outbreaks in the UK have occurred in London, Brighton and Manchester, although many areas of the UK have now reported smaller numbers of cases.Nearly all these cases are in men who have sex with men (MSM), and HIV co-infection is common in people diagnosed with LGV.