No abstract available
MeSH terms
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Antibodies / analysis
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Child
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Hemagglutination Inhibition Tests
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Humans
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Immunity*
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Immunization Schedule
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Measles Vaccine*
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Mumps / epidemiology
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Mumps Vaccine*
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Pennsylvania
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Rubella Vaccine / pharmacology
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Rubella virus*
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Time Factors
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Viral Vaccines*
Substances
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Antibodies
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Measles Vaccine
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Mumps Vaccine
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Rubella Vaccine
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Viral Vaccines