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Borrelia burgdorferi
Borrelia burgdorferi
Photo provided by Dr. Robert D. Gilmore, CDC.


Borrelia burgdorferi is the bacterium that causes Lyme disease. This bacterium belongs to a group of bacteria, called spirochetes, whose appearance resembles a coiled spring. Borreliae are very small and can not be seen without a microscope.


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Page last reviewed July 6, 2008

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