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. 2013 Aug 5;368(1623):20120140. doi: 10.1098/rstb.2012.0140

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© 2013 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 1. — The geographical distribution of children with poliomyelitis associated with wild-type poliovirus shown by serotype for 2012 and (inset) the total number of children with poliomyelitis globally by serotype reported each year during 2001–2012. Poliomyelitis as a result of vaccine-derived polioviruses is not shown. India was declared ‘polio-free’ in 2012, the last case reported from West Bengal in January 2011. The arrows above the inset graph indicate when monovalent and bivalent OPVs were first used by the GPEI. Map and data are from WHO (www.polioeradication.org).