CAIRO, EGYPT- DECEMBER 4, 2004 : A father brings his children in the street as health workers immunize children under five against polio during the national door to door polio vaccination campaign in Giza district near Cairo, on December 4, 2005. Egypt remains one of the 6 polio endemic countries in the world, with one case in 2004. (Photo by Jean-Marc Giboux/Getty Images)
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