Proteus mirabilis

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Proteus mirabilis is a Gram-negative, facultatively anaerobic, rod-shaped, nitrate-reducing, indole-negative bacterium. It shows swarming motility and urease activity. P. mirabilis causes 90% of all Proteus infections in humans. It is widely distributed in soil and water. Proteus mirabilis can migrate across the surface of solid media or devices using a type of cooperative group motility called swarming. Proteus mirabilis is most frequently associated with infections of the urinary tract, especially in complicated or catheter-associated urinary tract infections.

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