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TB in elephants called 'a gray area'
TB in elephants called 'a gray area'

An animal-rights group contends that an elephant performing in Baltimore with the Ringling Bros. and Barnum & Bailey Circus poses a health risk to the public because she has tested positive for tuberculosis, but circus and government health officials say the animal is no threat because she does not have an active form of the infectious disease. Karen, a 42-year-old Asian elephant, tested positive for TB in a blood test but negative in a follow-up test known as a trunk wash, which involves taking a culture of saline solution run through the animal's trunk. The positive blood test was enough to get Karen barred from entering Tennessee with the rest of the circus back in December....