No abstract available
MeSH terms
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Adult
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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 / epidemiology*
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COVID-19 / immunology*
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Cross Infection / immunology
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Cross Infection / prevention & control*
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Cross Infection / virology
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Female
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Hospitals, General / statistics & numerical data
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Humans
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Immunoglobulin G / blood*
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Infection Control
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Male
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Middle Aged
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Personnel, Hospital / statistics & numerical data*
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Retrospective Studies
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SARS-CoV-2 / immunology
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Seroepidemiologic Studies
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Young Adult
Substances
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Antibodies, Viral
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Immunoglobulin G