COMEDK 2007 MCQ Answer 19
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The correct answer is B
- Chlamydiae are very small bacteria which have to live intracellularly.
- They were originally considered to be viruses, but it is now known that they contain both DNA and RNA and are structurally related to Gram-negative bacteria.
- Several species are known in the genus Chlamydia: C. psittaci, the pathogen of psittacosis; C. pneumoniae (the old TWAR), pathogen of atypical pneumonia; and C. trachomatis, which has many serotypes.
- Serotypes A, B, Ba, and C cause trachoma. Serotypes D to K cause inclusion conjunctivitis in the newborn (“paratrachoma”), Reiter’s syndrome, non-gonococcal urethritis, epididymitis, cervicitis and P.I.D. (pelvic inflammatory disease). Neonatal conjunctivitis and pneumonia can be caused in the newborn by these bacteria. Serotypes L1 and L2 cause the sexually-transmitted disease lymphogranuloma venereum. L3 causes pneumonia in mice.
- C. trachomatis is considered to be responsible for 20% of the pharyngitis symptoms in adults.
Tags: Chlamydia trachomatis
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