No abstract available
MeSH terms
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Adolescent
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Adult
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Age Factors
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Antibodies, Viral / analysis
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Child
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Child, Preschool
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Humans
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Infant
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Italy
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Neutralization Tests
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Poliomyelitis / immunology*
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Poliovirus Vaccine, Oral*
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Vaccination
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Vaccines, Attenuated*
Substances
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Antibodies, Viral
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Poliovirus Vaccine, Oral
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Vaccines, Attenuated