Scientists don't know why superbugs spread

A study by Oxford researchers has suggested that hospitals may be using ineffective methods for tackling the Clostridium difficile bug.

The Daily Mail reports that scientists are unable to determine the reason why three quarters of people with C diff contract the bug. The authors said in the journal Public Library of Science Medicine: "In this endemic setting with well-implemented infection control measures, up to three quarters of new (C  diff) infections are not easily explained by conventional assumptions of ward-based transmission from symptomatic patients and so may not be targeted by current interventions."

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