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Abstract
Entities: Disease
Mesh: See more » Central AmericaHumansInfantMexicoPoliomyelitis/epidemiologyPoliomyelitis/prevention & controlPoliomyelitis/transmissionPoliovirus/isolation & purificationPoliovirus Vaccine, Oral/administration & dosagePopulation SurveillanceSouth AmericaTime Factors
Substances: See more » Poliovirus Vaccine, Oral
Year: 1989 PMID: 2547150
Source DB: PubMed Journal: MMWR Morb Mortal Wkly Rep ISSN: 0149-2195 Impact factor: 17.586