No abstract available
MeSH terms
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Child
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Developing Countries
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Disease Outbreaks
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Humans
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Immunization Programs*
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Poliomyelitis / epidemiology
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Poliomyelitis / prevention & control*
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Poliovirus Vaccine, Oral
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Poliovirus Vaccines*
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Vaccination
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World Health Organization
Substances
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Poliovirus Vaccine, Oral
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Poliovirus Vaccines