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Antibiotic-Resistant Bacteria


Updated January 26, 2014

Written or reviewed by a board-certified physician. See About.com's Medical Review Board.

Definition: Antibiotic-resistant bacteria are bacteria that have evolved with the ability to resist treatment by certain classes of antibiotics. This means that those antibiotics can no longer be used to treat infections. Antibiotic resistance frequently occurs because of improper use of antibiotics -- for example, people not finishing their prescriptions.
Also Known As: drug-resistant bacteria
Antibiotic resistant strains of gonorrhea are becoming a serious problem in the United States.

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