Chlamydia trachomatis

Chlamydia trachomatis is a species of the chlamydiae, a group of obligately intracellular bacteria. It causes chlamydia, a sexually transmitted disease, and trachoma, an eye infection that is a frequent cause of blindness. It is one of the smallest of all bacteria and its size may be as small as 500 nm in width, not much bigger than the largest viruses.

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