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Negative and positive predictive values (PPV and NPV, respectively) of assayed commercial tests to detect immunoglobulins specific for SARS-CoV-2 infection. PPV and NPV are adjusted for different population prevalence scenarios (3%, 50% and 95%), as described in the “Data analysis” section of material and methods. Each colour gradient refers to higher (darker) towards lower (lighter) values of NPV (blue) or PPV (grey).
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