Which diseases are the result of a bacterial infection?

Urinary tract infections are usually caused by bacteria, gingivitis commonly results from bacteria in dental plaque, and many peptic ulcers are caused by the bacterium Helicobacter pylori. Together, these make choice B, “urinary tract infection, gingivitis, and peptic ulcers,” the correct answer. The other choices include conditions such as renal failure, kidney stones, or irritable bowel syndrome, which are not bacterial infections.

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