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. 2021 May 22;40(9):1975–1981. doi: 10.1007/s10096-021-04274-7

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Fig. 1 — Correlations of cycle threshold (C_T) values of RT-qPCR E gene and the LFA rapid antigen results of throat nasopharyngeal samples with positive and negative results from 225 health care workers (HCW), 150 emergency room patients (ERP), and 225 nursing home residents (NHP). The median C_T values and interquartile range are shown in red