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. 2021 Sep 13;11:594577. doi: 10.3389/fcimb.2021.594577

Figure 5.

Figure 5

Distribution of Ct values for patients with sustained RT-PCR positive results. This histogram represents the Ct value (maximal if more than 1) for SARS-CoV-2 detection by RT-PCR in the last positive sample of patients with sustained positivity in samples taken 30 days apart or more.