LGV is caused by -
Lymphogranuloma venerum is caused by Chlamydia Trachomatis, serovars L1, L2 and L3. From illustrated synopsis of dermatology and sexually transmitted diseases neena khanna 5th edition page no 330
Chalamydia trachomatis
Haemophylus ducrei
HTLV type II
Donovanosis granulomatis
Sexually transmitted diseases