Article
Outbreak of type 2 vaccine-derived poliovirus in Nigeria: emergence and widespread circulation in an underimmunized population.
The Journal of infectious diseases - 1 Apr 2011
Wassilak Steven, Pate Muhammad Ali, Wannemuehler Kathleen, Jenks Julie, Burns Cara, Chenoweth Paul, Abanida Emmanuel Ade, Adu Festus, Baba Marycelin, Gasasira Alex, Iber Jane, Mkanda Pascal, Williams A J, Shaw Jing, Pallansch Mark, Kew Olen
Abstract excerpt
Wild poliovirus has remained endemic in northern Nigeria because of low coverage achieved in the routine immunization program and in supplementary immunization activities (SIAs). An outbreak of infection involving 315 cases of type 2 circulating vaccine-derived poliovirus (cVDPV2; >1% divergent from Sabin 2) occurred during July 2005-June 2010, a period when 23 of 34 SIAs used monovalent or bivalent oral...
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