How are the strains of Chlamydia trachomatis (C trachomatis) differentiated?

Updated: Sep 25, 2018
  • Author: Shahab Qureshi, MD, FACP; Chief Editor: Michael Stuart Bronze, MD  more...
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C trachomatis can be differentiated into 18 serovars (serologically variant strains) on the basis of monoclonal antibody–based typing assays. These serovars are associated with different medical conditions, as follows:

  • Serovars A, B, Ba, and C – Trachoma, a serious eye disease endemic in Africa and Asia that is characterized by chronic conjunctivitis and can lead to blindness

  • Serovars D-K – Genital tract infections

  • Serovars L1-L3 – Lymphogranuloma venereum (LGV), which is associated with genital ulcer disease in tropical countries

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