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MMWR: Update on Vaccine-Derived Polioviruses — Worldwide, January 2016–June 2017

Thursday, November 2, 2017   (0 Comments)

In 1988, the World Health Assembly launched the Global Polio Eradication Initiative (GPEI) (1). Among the three wild poliovirus (WPV) serotypes, only type 1 (WPV1) has been detected since 2012. Since 2014, detection of WPV1 has been limited to three countries, with 37 cases in 2016 and 11 cases in 2017 as of September 27. 

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