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(A) The median Ct-value of reverse transcription-quantitative polymerase chain reaction for SARS-CoV-2 genes (N, Orf and S genes) for samples collected in normal saline (NS) compared with viral transport medium (VTM) tested at different time intervals and stored at 4°C, while, (B) displays the median Ct-value of samples stored at room temperature (RT ~ 25°C) at two different time intervals (n=34).
