· The Global Polio Eradication Initiative Stop Transmission of Polio (STOP) Program — 1999–2013; June 14, 2013 / No. 23 . Notes from the Field: Outbreak of Poliomyelitis — Somalia and Kenya, May 2013; May 3, 2013 / No. 17 . Progress Toward Eradication of Polio — Worldwide, January 2011–March 2013; April 12, 2013 / No. 14.