TY - JOUR T1 - Globe in Brief JF - The Nation's Health JO - Nations Health SP - 13 LP - 13 VL - 43 IS - 6 AU - Kim Krisberg Y1 - 2013/08/01 UR - http://www.thenationshealth.org/content/43/6/13.3.abstract N2 - Thanks to vaccination efforts, the number of global polio cases is at the lowest level ever. ER -