Which Chlamydia serotypes primarily cause Adult inclusion conjunctivitis?

Which Chlamydia serotypes primarily cause Adult inclusion conjunctivitis?

• A. G-H
• B. E-F
• C. A-C
• D. D-K

Answer: (D)

Adult inclusion conjunctivitis is most often caused by the D through K serovars of Chlamydia trachomatis. These mucosal serovars infect conjunctival and genital mucosa, and eye involvement typically occurs after autoinoculation from a genital infection or exposure to infected secretions. The clinical picture includes mucopurulent discharge and follicular conjunctivitis, reflecting the organism’s tropism for mucosal surfaces. In contrast, serovars A–C are linked to trachoma, a chronic conjunctival disease that can lead to scarring, while serovars L1–L3 cause lymphogranuloma venereum. So the D through K group is the one that predominantly drives adult inclusion conjunctivitis.

Adult inclusion conjunctivitis is most often caused by the D through K serovars of Chlamydia trachomatis. These mucosal serovars infect conjunctival and genital mucosa, and eye involvement typically occurs after autoinoculation from a genital infection or exposure to infected secretions. The clinical picture includes mucopurulent discharge and follicular conjunctivitis, reflecting the organism’s tropism for mucosal surfaces.

In contrast, serovars A–C are linked to trachoma, a chronic conjunctival disease that can lead to scarring, while serovars L1–L3 cause lymphogranuloma venereum. So the D through K group is the one that predominantly drives adult inclusion conjunctivitis.