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Table 2 Detection and quantitation of SARS-CoV RNA by RT-PCR in throat washes.

From: Using patient-collected clinical samples and sera to detect and quantify the severe acute respiratory syndrome coronavirus (SARS-CoV)

Days after onset Samples Positive (number, %) Viral load (log10 copies/ml ± SD)
1–4 8 3 (37.5) 4.73 ± 0.45
5–9 45 27 (60) 3.59 ± 1.36
10–14 24 15 (62.5) 3.33 ± 1.37
15–19 11 5 (45.5) 1.88 ± 1.00
20–24 4 0 -
≥25 4 0 -
Total 96 50 (52.1) 3.45 ± 1.39