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MMWR: Notes from the Field: Circulating Vaccine-Derived Poliovirus Outbreaks — Five Countries, 2014–

Thursday, February 11, 2016   (0 Comments)

In 2015, wild poliovirus (WPV) transmission was identified in only Afghanistan and Pakistan (1). The widespread use of live, attenuated oral poliovirus vaccine (OPV) has been key in polio eradication efforts.


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