Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.
In 2009 only four countries (India, Pakistan, Afghanistan, and Nigeria) still had endemic poliomyelitis. The last case in India was in January 2011. Wild type 2 poliomyelitis was eradicated from all countries by 1999. Monovalent oral vaccines against types 1 and 3 poliomyelitis were licensed in 2005 and a bivalent oral (types 1 and 3) vaccine was licensed and used in Pakistan and Afghanistan in late 2009 and …
Competing interests None.
Provenance and peer review Commissioned; internally peer reviewed.