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Anti-SARS-CoV-2 IgG levels in SARS-CoV-2-positive patients with no symptoms, mild symptoms, or requiring intensive care. IgG levels of only seroconverted patients with positive IgG ELISA (IgG ratio >1.1) were compared according to severity of disease. The category “mild” includes all volunteers reporting at least 1 out of 5 symptoms (fever, coughing, loss of taste, loss of smell or dyspnea).
