No abstract available
Publication types
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Letter
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Research Support, Non-U.S. Gov't
MeSH terms
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Blood Donors / statistics & numerical data*
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Blood Transfusion / statistics & numerical data*
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COVID-19 / transmission*
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Humans
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Immunoglobulin G / blood
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Immunoglobulin M / blood
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Portugal
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RNA, Viral / blood*
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SARS-CoV-2 / immunology*
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SARS-CoV-2 / isolation & purification
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Seroepidemiologic Studies
Substances
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Immunoglobulin G
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Immunoglobulin M
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RNA, Viral