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An oral poliovirus vaccine trial in Costa Rica,
Early in the course of the 1959 nationwide oral poliovirus vaccination campaign in Costa Rica, a small, special and intensive study of oral vaccination was initiated there by the Yale Poliomyelitis Study Unit. The aims were to determine the effectiveness of vaccination, as measured by the rate of an...
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| Main Authors: | , , , , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
1962
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC2555663/ https://ncbi.nlm.nih.gov/pubmed/20604109 |
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