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May 31, 2013 1:07 PM

Dr. Anthony Fauci of the National Institute of Allergy and Infectious Diseases says the MERS virus isn't yet a 'threat to the world' as the World Health Organization warned. He says it could be if MERS evolves to easily spread among people. http://www.ottawacitizen.com/health/Fauci+virus+threat+world/8461575/story.html