Update on Vaccine-Derived Polioviruses -- Worldwide, January 2008-June 2009

September 2009
MMWR: Morbidity & Mortality Weekly Report;9/18/2009, Vol. 58 Issue 36, p1002
The article presents the state of vaccine-derived polioviruses (VDPVs) during January 2008 to June 2009. It reports on the cases and outbreaks of circulating VDPVs in several countries including Ethiopia, Guinea, and Nigeria. A woman who died in the U.S. was diagnosed to have immunodeficiency-associated VDPVs which may have developed from a household member who took the oral poliovirus vaccine (OPV). Countries affected by ambiguous VDPVs are also discussed.


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