Fatima Ahmed, 2, waits to receive a polio vaccination during a house to house polio immunization campaign in Sanaa, Yemen, Monday, April 7, 2014. A national three-day anti-Polio immunization campaign ... more 
Fatima Ahmed, 2, waits to receive a polio vaccination during a house to house polio immunization campaign in Sanaa, Yemen, Monday, April 7, 2014. A national three-day anti-Polio immunization campaign to vaccinate more than four million children across Yemen began on Monday. (AP Photo/Hani Mohammed) less 
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Associated Press | Photo By Hani Mohammed
Mon, Apr 7, 2014 9:45 AM EDT