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Abstract
Entities: Disease
Mesh: See more » Africa/epidemiologyDisease OutbreaksHumansPoliomyelitis/epidemiologyPoliomyelitis/prevention & controlPoliovirus/isolation & purificationPopulation Surveillance
Year: 2004 PMID: 15344665
Source DB: PubMed Journal: Wkly Epidemiol Rec ISSN: 0049-8114