FILE - In this Tuesday, Oct. 29, 2013 file photo released by UNICEF, a health worker administers polio vaccine to a child as part of a UNICEF-supported vaccination campaign at the Abou Dhar Al Ghifari... more 
FILE - In this Tuesday, Oct. 29, 2013 file photo released by UNICEF, a health worker administers polio vaccine to a child as part of a UNICEF-supported vaccination campaign at the Abou Dhar Al Ghifari Primary Health Care Center in Damascus, Syria. A top official vowed Monday, Nov. 4, 2013 authorities will immunize all children in Syria after the U.N. reports first outbreak of polio in 14 years.(AP Photo/UNICEF, Omar Sanadiki, File) less 
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Associated Press | Photo By UNICEF, Omar Sanadiki, File
Mon, Nov 4, 2013 10:59 AM EST