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Performance of Repeat BinaxNOW Severe Acute Respiratory Syndrome Coronavirus 2 Antigen Testing in a Community
Melisa M Shah1,2, Phillip P Salvatore1,2, Laura Ford1,2
1COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
Abstract:
Repeating the BinaxNOW antigen test for severe acute respiratory syndrome coronavirus 2 using 2 groups of readers within 30 minutes resulted in high concordance (98.9%) in 2110 encounters. Same-day repeat antigen testing did not significantly improve test sensitivity (77.2% to 81.4%) while specificity remained high (99.6%).
