No abstract available
MeSH terms
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Antibodies, Viral / analysis*
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Antibodies, Viral / blood
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COVID-19 / diagnosis*
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COVID-19 / immunology
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COVID-19 / prevention & control
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COVID-19 / transmission*
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COVID-19 Serological Testing / methods*
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COVID-19 Serological Testing / standards
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COVID-19 Serological Testing / statistics & numerical data
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Cross-Sectional Studies
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Disease Transmission, Infectious
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Humans
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Immunoglobulin M / analysis*
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Immunoglobulin M / blood
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Mass Screening*
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Predictive Value of Tests
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Retrospective Studies
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SARS-CoV-2 / immunology*
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SARS-CoV-2 / isolation & purification
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Sensitivity and Specificity
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Travel*
Substances
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Antibodies, Viral
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Immunoglobulin M