No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Antibodies, Viral
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Asymptomatic Infections
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COVID-19 / diagnosis*
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COVID-19 / immunology
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COVID-19 Serological Testing / methods*
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Clinical Laboratory Techniques
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Cross Infection
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Female
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Humans
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Immunoassay
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Male
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Middle Aged
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Patient Admission*
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Reverse Transcriptase Polymerase Chain Reaction
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SARS-CoV-2*
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Sensitivity and Specificity