Abstract
In 2010, WHO's Director General, Margaret Chan, formed an independent monitoring board to assess progress towards achievment of the milestones of the Global Polio Eradication Initiative strategic plan 2010–12. The board's report in April this year showed that the number of poliomyelitis cases has decreased from 350 000 in 1988 to 1294 in 2010. Endemic transmission of wild poliovirus types 1 and 3 continued only in Afghanistan, India, Nigeria, and Pakistan, the four countries in which poliovirus transmission has never been stopped.
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