No abstract available
MeSH terms
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Adult
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Antibodies, Viral / blood*
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BNT162 Vaccine
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COVID-19 / immunology
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COVID-19 / prevention & control*
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COVID-19 Vaccines / immunology*
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Humans
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Middle Aged
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Saliva / immunology*
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Vaccination*
Substances
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Antibodies, Viral
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COVID-19 Vaccines
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BNT162 Vaccine