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5 % negative agreement). Serology was complementary to RT-PCR in routine care and lead to identification of false positive (Ct38, 2 targets detected) and false negative RT-PCR results (1 month post onset of symptoms). Serology was complementary to RT-PCR for the diagnosis of COVID-19 at least 14 days after onset of symptoms. First line serology testing can be performed with Wantai Ab or Abbott IgG assays, while DiaPro IgG confirmation assay can be used as an efficient confirmation assay. Serology was complementary to RT-PCR f