Cliff, a 2-year-old beagle, has been trained to detect the bacterium Clostridium difficile, which is responsible for up to 14,000 human deaths annually in the U.S. Cliff correctly identified the infection in 25 of 30 people and determined that 265 of 270 uninfected people didn't have the bacteria. Researchers say dogs could be trained to detect the infection more quickly than conventional tests. "One big question for me is, 'What else can a dog's amazing sensory apparatus be utilized to detect?'" said physician Bruce Hirsch, an infectious disease specialist.
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