US 'super bugs' invading South America

Two clones of highly antibiotic-resistant organism strains, which previously had only been identified in the United States, are now causing serious sickness and death in several Colombian cities including the capital Bogotá, say researchers at The University of Texas Medical School at Houston. The study, done in collaboration with Universidad El Bosque in Bogotá, is presented in a research letter published in the Nov. 13 issue of the New England Journal of Medicine.

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