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A Syrian child gets a polio vaccination at a clinic in Damascus on November 20, 2013. The UN health agency launched a large-scale campaign on October 24 to immunise 1.6 million children in Syria against polio, measles, mumps and rubella. AFP PHOTO /LOUAI BESHARA        (Photo credit should read LOUAI BESHARA/AFP/Getty Images) LOUAI BESHARA/Getty