No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Antibodies, Viral / blood
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COVID-19 / complications
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COVID-19 / immunology*
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Female
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Humans
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Immunoglobulin G / blood
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Immunoglobulin M / blood
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Immunosuppressive Agents / adverse effects*
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Male
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Middle Aged
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Pregnancy
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Retrospective Studies
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Risk Factors
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Seroconversion*
Substances
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Antibodies, Viral
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Immunoglobulin G
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Immunoglobulin M
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Immunosuppressive Agents