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Abstract
Entities: Disease
Mesh: See more » AmericasChildChild, PreschoolHumansImmunization ProgramsInfantPan American Health OrganizationPoliomyelitis/epidemiologyPoliomyelitis/prevention & controlPoliovirus Vaccine, Oral/administration & dosagePopulation Surveillance
Substances: See more » Poliovirus Vaccine, Oral
Year: 1994 PMID: 7527239
Source DB: PubMed Journal: Wkly Epidemiol Rec ISSN: 0049-8114