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RNA viability in DS solution after storage at 4 °C and room temperature for 16 days. DS tubes were spiked with SARS-CoV-2 RNA and stored under refrigeration or at room temperature. The presence of SARS-CoV-2 RNA was detected by RT-PCR (N1 and N2 viral gene probes) in the samples after 1, 2, 4, 8, and 16 days of storage
