**7. Diseases by serotype**

*Chlamydia trachomatis*, has 15 serotypes due to antigenic variations in MOMP encoded by ompA [16].

1.**A, B, Ba, C serotypes:** It is the cause of endemic trachoma. Hand-eye contact is transmitted by flies.

2.**D, E, F, G, H, I, J, K serotypes:** Causing inclusion conjunctivitis, nongonococcal urethritis, cervicitis, salpingitis, proctitis, epididymitis, neonatal pneumonia, and conjunctivitis. Hand-eye contact, sexually and perinatally transmitted.

3.**L1, L2, L3 serotypes:** Sexually transmitted L1, L2, L3 serotypes cause LGV [7].
